A celebratory Italian spring tart that looks like a bouquet of mimosa blossoms — a buttery shortcrust shell filled with velvety vanilla pastry cream, topped with delicate cubes of sponge cake soaked in rum syrup, and finished with caramelized pineapple and fresh strawberries.
| Amount | Ingredient |
|---|---|
| Mixed Berry Mimosa | Replace the caramelized pineapple with a mix of fresh raspberries, blueberries, and sliced strawberries arranged on top of the pastry cream before adding the sponge cake cubes. The berries provide a tart contrast to the sweet cream |
| Chocolate Mimosa Crostata | Fold 3 oz (85 g) of melted dark chocolate (70%) into the cooled pastry cream before spreading. Replace the rum in the syrup with amaretto or coffee liqueur. The chocolate-pastry-cream base is a stunning pairing with the sponge cake and strawberries |
| Peach and Prosecco Version | Replace the pineapple with diced peaches caramelized in butter and brown sugar. Replace the rum in the syrup with Prosecco (simmer briefly to cook off the alcohol). A sophisticated summer variation that's pure Italian elegance |
| Mini Individual Tarts | Divide the shortcrust dough into 8 to 10 portions and press into mini tartlet pans (4-inch/10 cm). Reduce blind baking to 10 minutes with weights + 3 minutes without. Assemble with proportionally less filling. Perfect for elegant single-serving desserts |
| Gluten-Free Version | Substitute the all-purpose flour in the shortcrust with a 1:1 gluten-free baking blend (with xanthan gum). Use a gluten-free all-purpose blend for the sponge cake in place of the all-purpose flour (keep the potato starch). The texture will be slightly more delicate but still delicious |
| Dairy-Free Version | Replace the butter in the shortcrust with cold vegan butter, and the butter for caramelizing with coconut oil. Substitute the whole milk in the pastry cream with full-fat oat milk or coconut milk (the flavor will change but remain delicious). Use a coconut-based cream if the pastry cream needs enriching |
In Italy, the mimosa (Acacia dealbata) is the flower of International Women's Day (Festa della Donna) and a symbol of spring, renewal, and celebration. The crostata mimosa was created to honor this tradition — a festive, elegant tart whose surface is covered in small, golden cubes of sponge cake that mimic the fuzzy yellow pom-poms of the mimosa bloom. This version layers a crisp, buttery shortcrust pastry (pasta frolla) with a silky vanilla pastry cream enriched with lemon and a whisper of cinnamon, then crowns it with rum-soaked sponge cake cubes and caramelized pineapple. Fresh strawberries and a dusting of powdered sugar complete the picture. The result is a showstopping dessert that's as beautiful as it is delicious — a perfect centerpiece for celebrations, spring gatherings, or any occasion that calls for something special.
Use the best-quality butter you can find — the shortcrust relies on it for flavor and texture. The vanilla bean is not optional for the pastry cream; its seeds create the characteristic black-speckled appearance that signals quality. If you can't find rice flour or rice starch, substitute an additional 2½ tablespoons (20 g) of cornstarch, though the texture will be slightly less silky. Potato starch gives the sponge cake its characteristic lightness; do not substitute cornstarch here. For the rum syrup, a good dark rum like Myers's or Appleton Estate adds depth, but a non-alcoholic version using rum extract works well. Use an unwaxed organic lemon for the zest and peel.
In a food processor (or large bowl if working by hand), combine 2⅓ cups (300 g) flour, ⅔ cup (130 g) sugar, finely grated zest of 1 lemon, and ¼ teaspoon salt. Pulse to combine.
Add the ¾ cup (180 g) cold cubed butter. Pulse (or cut in with a pastry cutter) until the mixture resembles coarse meal with pea-sized butter pieces — about 8 to 10 pulses.
Add 3 egg yolks and pulse just until the dough begins to clump together. If the dough seems dry, add 1 to 2 tablespoons of cold water, 1 teaspoon at a time, pulsing briefly after each addition. The dough should hold together when squeezed but should not be sticky.
Turn the dough out onto a lightly floured surface, gather into a disk, and wrap tightly in plastic wrap. Refrigerate for at least 1 hour (up to 3 days).
The key to a tender shortcrust is keeping the butter cold and working the dough as little as possible. If you're working by hand, use your fingertips to rub the butter into the flour — the heat of your palms will melt the butter. If the dough cracks when you try to roll it, let it sit at room temperature for 5 minutes to warm slightly.
In a medium saucepan over medium heat, combine 2 cups plus 2 tbsp (500 ml) whole milk, the seeds scraped from 1 vanilla bean (plus the pod), 1 strip of lemon peel, and 1 cinnamon stick. Heat until small bubbles form around the edges — do not boil. Remove from heat, cover, and let steep for 10 minutes.
Meanwhile, in a medium bowl, whisk together ¾ cup (150 g) sugar, 5 egg yolks, 3 tbsp (25 g) cornstarch, and 2½ tbsp (20 g) rice flour until smooth and pale, about 2 minutes.
Slowly drizzle about ½ cup of the warm milk into the egg mixture, whisking constantly to temper the eggs. Then pour the tempered egg mixture back into the saucepan with the remaining milk, whisking continuously.
Return to medium heat and cook, whisking constantly, until the mixture thickens and comes to a gentle boil — about 3 to 4 minutes. The cream should be thick enough to coat the back of a spoon and hold a clear line when you run your finger through it.
Remove from heat. Discard the vanilla pod, lemon peel, and cinnamon stick. Transfer the pastry cream to a shallow bowl, press a piece of plastic wrap directly onto the surface (to prevent a skin from forming), and let cool to room temperature. Then refrigerate until chilled, at least 30 minutes (or up to 3 days).
Constant whisking is essential during the thickening phase — if you stop, the egg yolks can scramble against the hot bottom of the pan. The rice flour gives the cream a uniquely silky, almost velvety texture that cornstarch alone cannot achieve. If small lumps form, pass the finished cream through a fine-mesh sieve.
Preheat the oven to 350°F (175°C). Butter an 8-inch (20 cm) round cake pan and line the bottom with a parchment paper round.
In a large heatproof bowl (or the bowl of a stand mixer), combine 2 whole eggs, 2 egg yolks, and ½ cup plus 1 tbsp (105 g) sugar. Place the bowl over a pot of simmering water (the bowl should not touch the water). Whisk gently until the sugar dissolves and the mixture is warm to the touch, about 2 to 3 minutes.
Remove from the heat and beat with an electric hand mixer (or stand mixer with whisk attachment) on high speed until tripled in volume, pale, and thick enough to hold a ribbon — when you lift the whisk, the batter should fall in a slowly dissolving ribbon, about 5 to 7 minutes.
In a separate small bowl, sift together ½ cup (65 g) potato starch, ⅓ cup (45 g) flour, and ¼ teaspoon salt.
Fold the dry ingredients into the egg mixture in three additions, using a rubber spatula. Use a gentle, decisive folding motion — cut through the center, scrape the bottom, and turn the batter over. Do not stir or you'll deflate the airy structure. Stop as soon as no streaks of flour remain.
Pour the batter into the prepared pan and bake for 20 to 25 minutes, until the cake is golden brown and a toothpick inserted in the center comes out clean.
Let cool in the pan for 5 minutes, then turn out onto a wire rack to cool completely. Once cool, cut the sponge cake into ½-inch (1.25 cm) cubes. Set aside in a single layer on a baking sheet.
The gentle warming over simmering water is the secret to a light sponge — it dissolves the sugar and denatures the egg proteins slightly, allowing them to trap more air during whipping. If you don't have potato starch, you can use all-purpose flour (110 g total), but the cake will be denser and less tender. Cool the cake completely before cubing to prevent tearing.
Preheat the oven to 350°F (175°C).
Roll the chilled dough on a lightly floured surface to a 12-inch (30 cm) round, about ⅛ inch (3 mm) thick. Turn the dough frequently and dust with flour as needed to prevent sticking.
Transfer to the 9-inch (23 cm) tart pan by rolling the dough gently around your rolling pin and unrolling it over the pan. Gently press the dough into the corners and up the sides, taking care not to stretch it. Roll the pin across the top of the pan to trim the excess dough.
Prick the bottom of the crust all over with a fork (this prevents air bubbles). Line with parchment paper and fill with pie weights or dried beans.
Bake for 15 minutes, until the edges are set and just beginning to turn pale gold. Remove the parchment and weights and return the crust to the oven for 5 to 7 more minutes, until the bottom is dry, lightly golden, and completely set.
Let cool completely in the pan on a wire rack.
Do not skip the blind baking — the pastry cream is a wet filling and will turn an unbaked crust into a soggy disaster. The fork pricks are not optional; without them, trapped steam will cause the crust to dome and crack. If the edges start browning too quickly before the bottom is done, tent them lightly with strips of foil.
In a small saucepan, combine ⅓ cup (70 g) water and 1½ tbsp (20 g) sugar. Bring to a simmer over medium heat, stirring until the sugar dissolves.
Remove from heat and stir in 2 teaspoons dark rum (or 1 tsp rum extract + 1 tbsp water). Set aside to cool.
In a large skillet, melt 1½ tbsp (20 g) unsalted butter over medium-high heat until it foams and subsides.
Add 1⅓ cups (200 g) diced pineapple and 2 tablespoons dark brown sugar. Cook, stirring occasionally, until the pineapple is golden brown, caramelized, and the liquid has reduced to a syrupy glaze — about 5 to 7 minutes.
Pour 2 tablespoons rum over the pineapple (careful — it may flame for a second), and cook for 30 seconds more, stirring to deglaze the pan.
Remove from heat and let cool completely.
The caramelization should be deep but not burnt — the pineapple should be sticky, golden, and glossy, with concentrated sweetness. If the pineapple releases too much liquid, turn the heat to high and cook until the liquid evaporates to a glaze. Cool completely before using, or the hot pineapple will melt the pastry cream.
Spread the chilled pastry cream evenly into the cooled blind-baked tart shell. Use an offset spatula to create a smooth, level surface.
Briefly dip each sponge cake cube into the rum syrup — just a quick dunk on one or two sides, not a full soak. You want the cubes to be moistened but not falling apart.
Arrange the rum-soaked cubes over the pastry cream in a single, dense layer, covering the entire surface. Orient them with their cut faces upward so they resemble the individual florets of a mimosa bloom. Leave a few small gaps where the pineapple and strawberries will peek through.
Dot the caramelized pineapple into the gaps, pressing it gently into the cream. Scatter the sliced strawberries decoratively over the surface, tucking a few between the cake cubes.
Dust generously with powdered sugar through a fine-mesh sieve just before serving.
The visual effect should mimic a bouquet of mimosa flowers — a field of pale golden sponge cake cubes punctuated with bright yellow pineapple, red strawberry accents, and a snowy drift of powdered sugar. Don't over-soak the sponge cake; the cubes should retain their shape and provide a light, tender bite, not a soggy one.
Remove the outer ring of the tart pan. Transfer the crostata to a serving plate or cake stand.
Slice into wedges using a sharp chef's knife — wipe the blade clean between cuts for neat slices.
Serve at room temperature for the best texture and flavor. The pastry cream should be cool and silky, the crust crisp, and the sponge cake cubes tender and moist.
If you've made the tart ahead, bring it to room temperature (about 30 minutes out of the fridge) before serving. Cold pastry cream will taste less flavorful and the crust will seem harder.
| Mistake | Why It Hurts | The Fix |
|---|---|---|
| Overworking the shortcrust dough | Develops gluten, making the crust tough and dense instead of tender and crumbly | Mix only until the dough comes together. A few cracks at the edges when rolling are fine — patch them with trimmings |
| Skipping the blind baking | The wet pastry cream soaks into the raw crust, creating a soggy, undercooked bottom | Always blind bake until the bottom is fully set and lightly golden. The jam-like caramelized pineapple also adds moisture — a well-baked crust is essential |
| Over-whisking the pastry cream after adding the egg yolks | The cream can become thin or the eggs may scramble, resulting in a lumpy, grainy texture | Whisk constantly but gently during cooking. If lumps form, pass the finished cream through a fine-mesh sieve |
| Over-soaking the sponge cake cubes | The cubes turn into wet, mushy blobs that collapse into the pastry cream | Dip each cube briefly — just one or two sides, a quick dunk. The cubes should be moistened, not saturated |
| Under-whipping the sponge cake eggs | The cake will be dense and flat instead of light and airy, resulting in heavy cubes that sink into the cream | Whip until the mixture triples in volume and holds a thick ribbon that dissolves slowly on the surface |
| Adding the pineapple while still hot | The hot pineapple melts the pastry cream, creating a soupy, unstable tart | Let the caramelized pineapple cool completely (to room temperature) before assembling |
| Refrigerating the assembled tart too long | The crust absorbs moisture from the cream and softens; the sponge cake cubes become soggy | Assemble no more than 2 to 3 hours before serving. The tart is best the day it's made |
| Using low-quality rum | Harsh, medicinal alcohol notes overpower the delicate flavors of the vanilla and fruit | Use a smooth dark rum you'd be happy to drink. If you don't cook with alcohol, rum extract mixed with a little water is a good substitute |
| Variation | How To |
|---|---|
| Lemon Mimosa Crostata | Add the zest of 2 lemons to the pastry cream and replace the rum syrup with a limoncello syrup (⅓ cup water, 1½ tbsp sugar, 2 tbsp limoncello). The bright, citrusy profile is even more spring-like |
| Method | Details |
|---|---|
| Room temperature | The assembled crostata can sit at room temperature for up to 2 hours before serving. Beyond that, refrigerate |
| Refrigerator | Store leftovers covered loosely with plastic wrap for up to 2 days. The crust will soften and the sponge cake will become more moist, but the flavors will meld beautifully. Bring to room temperature for 20 minutes before serving |
| Component make-ahead (pastry cream) | The pastry cream can be made up to 3 days ahead. Store in an airtight container with plastic wrap pressed directly on the surface. Whisk briefly before spreading to restore its smooth texture |
| Component make-ahead (shortcrust dough) | The shortcrust dough can be refrigerated for up to 3 days or frozen for up to 3 months. Thaw frozen dough overnight in the refrigerator before rolling |
| Component make-ahead (sponge cake) | The un-cut sponge cake can be baked a day ahead, cooled completely, and stored wrapped tightly in plastic wrap at room temperature. Do not refrigerate — it will dry out. Cut into cubes just before assembling |
| Freezing the assembled tart | Not recommended — the pastry cream will separate and the crust will become soggy upon thawing. The texture will be compromised |
| Leftover sponge cake cubes | Store un-soaked cubes in an airtight container at room temperature for up to 3 days. Toast lightly and serve with ice cream or use in a trifle |
| Leftover pastry cream | Any leftover pastry cream is delicious on its own, served with fresh fruit, or spread between layers of a simple cake. It keeps for 3 days refrigerated |
| Wine | Why |
|---|---|
| Moscato d'Asti (Piedmont) | Lightly sparkling, low-alcohol, and intensely aromatic — notes of peach blossom, lychee, and orange peel. Its gentle sweetness and lively bubbles refresh the palate between creamy, rum-spiked bites. A perfect, joyful pairing for this celebratory tart |
| Vin Santo (Tuscany) | The classic Tuscan dessert wine — amber-hued with notes of dried apricot, honey, toasted almond, and orange peel. Its rich, raisiny sweetness echoes the caramelized pineapple while its bright acidity cuts through the silky pastry cream |
| Passito di Pantelleria (Sicily) | Made from Zibibbo (Muscat of Alexandria) grapes dried in the Sicilian sun. Intensely aromatic with notes of dried figs, apricot jam, and honey — the sweetness and complexity stand up beautifully to the rum and caramel flavors |
| Late Harvest Gewürztraminer (Alto Adige) | Aromatic and intensely fruity with notes of rose, lychee, honey, and spice. Its floral character complements the vanilla and lemon zest in the pastry cream, creating a layered, luxurious pairing |
| Brachetto d'Acqui (Piedmont) | A lightly sparkling, sweet red wine with notes of strawberries, raspberries, and rose petals. Its red fruit character mirrors the fresh strawberries on the tart, creating a delightful echo on the palate |
| Recioto di Soave (Veneto) | A rich, honeyed sweet wine from dried Garganega grapes, with flavors of apricot, honeycomb, and candied citrus. The almond-like finish pairs beautifully with the shortcrust pastry |
| Calories | Protein | Fat | Carbs | Fiber |
|---|---|---|---|---|
| ~520 | 9 g | 27 g | 63 g | 2 g |
Nutritional values are estimates based on 10 servings. The butter in the shortcrust and the egg yolks in the pastry cream contribute the majority of the fat content, while the sponge cake and sugar account for most of the carbohydrates. This is a rich, special-occasion dessert — a single slice is more than satisfying. To lighten it, reduce the sugar in the pastry cream to ½ cup (100 g) and use 2% milk instead of whole milk. The caramelized pineapple can be sweetened with 1 tablespoon of brown sugar instead of 2, though the caramelization will be less pronounced. The sponge cake is naturally low in fat, as it uses no butter or oil — the richness comes entirely from the eggs. This tart is not suitable for low-carb or keto diets due to the high sugar and starch content.
What does this tart taste like, and what's with the name?
The crostata mimosa is named after the mimosa flower (Acacia dealbata) — the bright yellow, fuzzy pom-pom blooms that appear in early spring across Italy. The tart's surface is covered in small, golden sponge cake cubes that are meant to resemble these flowers. The flavor is a harmonious blend of buttery shortcrust, silky vanilla pastry cream, rum-soaked sponge cake, sweet-tart caramelized pineapple, and fresh strawberries. It's a celebration of spring on a plate — delicate, elegant, and festive.
Can I make this tart ahead of time for a party?
Yes, but with strategic planning. The components can be made ahead: shortcrust dough (3 days in the fridge), pastry cream (3 days in the fridge), and sponge cake (1 day at room temperature). On the day of serving, blind bake the crust (30 minutes), assemble the tart, and refrigerate for no more than 2 to 3 hours before serving. Dust with powdered sugar just before serving. The assembled tart does not keep well overnight — the crust softens and the sponge cake becomes soggy.
What is the best way to cut the sponge cake into cubes?
Let the cake cool completely — at least 1 hour. Use a sharp serrated knife to trim the browned edges. Slice the cake into ½-inch (1.25 cm) thick slabs, then cut each slab into ½-inch strips, then crosswise into cubes. For neater cubes, chill the cake for 15 minutes in the freezer before cutting. The cubes should be uniform for the best visual effect.
Can I use store-bought sponge cake?
You can, but homemade pan di Spagna is far superior — it has a light, airy texture and a clean flavor that absorbs the rum syrup beautifully without becoming mushy. Store-bought sponge cake tends to be denser, sweeter, and more processed. If you must use store-bought, look for an Italian pan di Spagna or a high-quality plain pound cake. Cut into cubes and toast lightly before soaking to improve the texture.
Why did my pastry cream turn out lumpy?
Lumpy pastry cream is usually caused by one of three things: (1) The milk was added too quickly to the egg mixture, scrambling the eggs. (2) The cream was not whisked constantly during cooking. (3) The heat was too high, causing the eggs to cook unevenly. To fix lumpy pastry cream, pass it through a fine-mesh sieve immediately — this will remove the lumps and give you a smooth cream. To prevent lumps in the future, always temper the eggs slowly, whisk constantly over medium rather than high heat, and strain the milk to remove any skin before adding to the eggs.
What can I use instead of rum?
For an alcohol-free version, substitute the rum in both the syrup and the caramelized pineapple with cooled strong black tea (for depth) or pineapple juice (for sweetness). For a different flavor profile, try amaretto (almond), limoncello (lemon), or coffee liqueur. Each will give the tart a distinctive character. If using rum extract, remember it's much more concentrated — use ½ teaspoon in the syrup and ½ teaspoon in the pineapple.
Can I use canned pineapple instead of fresh?
Fresh pineapple is strongly recommended — canned pineapple is packed in syrup and lacks the firm texture and bright acidity needed for proper caramelization. If fresh pineapple is unavailable, use frozen pineapple chunks (thawed and drained well) and reduce the added sugar by 1 tablespoon to compensate for the extra sweetness.
My crust shrank during blind baking. What went wrong?
Crust shrinkage is caused by (1) overworking the dough, (2) not chilling it enough before baking, or (3) stretching the dough as you press it into the pan. The gluten in overworked dough contracts as it heats, pulling the sides inward. To prevent this: handle the dough minimally, chill the rolled crust in the pan for 15 minutes before baking, and press the dough into the pan without stretching it. If it shrinks anyway, gently press it back into shape while it's still warm from the first blind bake.
Is this tart gluten-free friendly?
Not as written, but see the Variations section for a gluten-free adaptation. Use a 1:1 gluten-free baking blend with xanthan gum for both the shortcrust and the sponge cake. The texture will be more delicate, and the sponge cake may be slightly denser, but the result is still delicious.
Why do I need rice flour in the pastry cream?
Rice flour (or rice starch) gives the pastry cream a uniquely silky, elegant texture that cornstarch alone cannot match. It creates a cream that's smooth, tender, and melts on the tongue — an Italian crema pasticcera hallmark. If you don't have it, substitute with an equal amount of cornstarch; the cream will still be good but slightly less refined.
Photo reference: `vol1_054.png` — A three-quarter angled shot of a 9-inch (23 cm) fluted tart pan with a golden-brown, buttery shortcrust crust. The surface of the crostata is densely covered with small, pale golden cubes of sponge cake arranged like mimosa florets, their cut faces catching the light. Between the cake cubes, bright golden-yellow bits of caramelized pineapple peek through, alongside glossy red slices of fresh strawberry. A generous, snowy drift of powdered sugar dusts the entire surface, creating soft, crystalline highlights. The tart sits on a ceramic cake stand or rustic wooden board. Beside it: a small pitcher of limoncello or a glass of Moscato d'Asti, a few fresh mimosa branches (or yellow blossoms) in a small vase, and a linen napkin. The scene is set on a sun-drenched table with soft, warm spring light filtering through a window. The mood is cheerful, elegant, and celebratory — a tribute to Italian spring traditions and the joy of the Festa della Donna.
Recipe from "The Italian Kitchen" by Vita Milanese — Volume 1: Pasta Perfetto 🌼
Recipe from The Italian Kitchen by Vita Milanese — Volume 1 · Pasta Perfetto. Discover all volumes on the ebook page.