310 — Pasta al pesto di cavolo riccio (Pasta with Kale Pesto)

Category: Primi piatti

Amount	Ingredient
14 min	Pulse pesto → reserve 1 cup pasta water
15 min	Drain pasta (al dente)
16 min	Toss pasta with pesto and pasta water
18 min	Adjust consistency, taste, and season
20 min	Plate and serve with garnishes

Servings: 4

Total Time: 25 minutes

Active Time: 20 minutes

Skill Level: Beginner

Source: Liguria-inspired — a modern twist on the classic Genovese pesto, substituting kale for basil

1. Why This Recipe Works

Kale pesto pasta brings the vibrant, peppery intensity of cavolo riccio (lacinato kale) together with the nutty richness of walnuts and the savory depth of aged Parmigiano-Reggiano — all without sacrificing the bright, herbaceous soul of a classic pesto. Blanching the kale briefly in salted water tames its toughness and bitterness while locking in a vivid emerald color; shocking it in ice water fixes the hue and preserves a tender texture. Squeezing the blanched kale bone-dry concentrates its flavor and prevents the pesto from turning watery. Walnuts provide an earthy, slightly bitter counterpoint to the kale's grassiness, while a squeeze of lemon juice brightens the whole sauce. Tossing with hot pasta and a splash of the starchy cooking water yields a creamy, clingy emulsion that coats every strand.

3. Before You Begin

• Kale prep: Strip the kale leaves from the tough central ribs by running your hand along the stem from bottom to top. Discard the stems. Tear the leaves into roughly 3-inch pieces.
• Toast the walnuts (optional): Spread the walnuts in a dry skillet over medium heat and cook, shaking frequently, until fragrant and lightly golden, 3–4 minutes. Let cool completely before blending.
• Pasta water: Bring 4–5 quarts of water to a rolling boil and salt generously (1½ tbsp kosher salt per gallon). The pasta water serves double duty — it cooks the kale and the pasta, and the starchy water is essential for emulsifying the pesto.
• Grate your own cheese: Pre-shredded Parmesan contains anti-caking agents that prevent smooth blending. Grate from a wedge on the fine side of a box grater or Microplane.
• Work quickly at the end: The sauce comes together in the last minute — have the drained pasta, pesto, and a ladle of pasta water all at arm's reach before you start tossing.

4. Equipment

• Large pot (6–8 qt) for pasta and blanching
• Large bowl filled with ice water (ice bath)
• Colander or spider skimmer
• Food processor or high-speed blender
• Chef's knife and cutting board
• Box grater or Microplane
• Rubber spatula
• Tongs or pasta fork
• Measuring cups and spoons
• Paper towels or clean kitchen towel

5. Key Steps at a Glance

1. Blanch kale → 1 minute in salted boiling water → plunge into ice bath → squeeze dry.
2. Cook pasta → Reserve 1 cup pasta water → drain.
3. Blend pesto → Kale + walnuts + Parmesan + garlic + olive oil + lemon juice → pulse to a coarse, spreadable paste.
4. Toss & finish → Combine hot pasta with pesto and reserved pasta water → toss until creamy and coated.
5. Serve → Garnish with extra Parmesan, walnuts, and a drizzle of olive oil.

6. Step-by-Step Instructions

Step 1: Blanch the Kale

1. Bring a large pot of salted water to a rolling boil (you will use the same water for the pasta).
2. Add the torn kale leaves and cook for exactly 1 minute. The leaves will turn a brilliant bright green and soften slightly.
3. Using a spider skimmer or tongs, immediately transfer the kale to a bowl of ice water. Swirl to cool completely — this stops the cooking and sets the color.
4. Once cold (about 30 seconds), transfer the kale to a clean kitchen towel or several layers of paper towels. Wrap and squeeze firmly to remove as much water as possible. The kale should feel almost dry to the touch. Set aside.

Step 2: Cook the Pasta

1. Return the pot of water to a rolling boil (add more water if needed, and re-salt if you topped off).
2. Add the pasta and cook according to package directions until al dente (about 1 minute less than the suggested time — the pasta will finish cooking in the sauce).
3. Reserve 1 cup (240 ml) of pasta cooking water.
4. Drain the pasta in a colander. Do not rinse — the surface starch helps the sauce cling.

Step 3: Make the Kale Pesto

1. While the pasta cooks, combine the squeezed-dry kale, toasted walnuts, grated Parmigiano-Reggiano, peeled garlic cloves, lemon juice, and a generous pinch of salt and black pepper in the bowl of a food processor.
2. Pulse 5–6 times until the mixture is coarsely chopped.
3. With the motor running, drizzle in the 80 ml olive oil in a steady stream through the feed tube. Process until the pesto is thick, creamy, and mostly smooth but retains a little texture from the walnuts — about 20–30 seconds total. Scrape down the sides of the bowl once halfway through.
4. Taste and adjust seasoning with additional salt, pepper, or lemon juice as needed. The pesto should be vividly green, savory, and bright.

Step 4: Toss Pasta with Pesto

1. Transfer the hot drained pasta to a large serving bowl or return it to the now-empty pasta pot.
2. Add the kale pesto and ¼ cup (60 ml) of the reserved pasta water.
3. Toss vigorously with tongs until the pesto coats every strand evenly. The sauce should loosen and become creamy as the starch from the pasta water emulsifies with the olive oil.
4. If the sauce seems too thick, add more pasta water 1 tablespoon at a time, tossing after each addition, until you reach a silky, spoon-coating consistency.
5. Taste and adjust seasoning with salt and pepper.

Step 5: Serve

1. Divide the pasta among warmed serving bowls.
2. Top each portion with a generous grating of Parmigiano-Reggiano, a sprinkle of crushed toasted walnuts, and a light drizzle of extra-virgin olive oil. Serve immediately.

7. Visual Cues — What to Look For

Step	Visual Cue
Blanched kale	Brilliant bright green; tender but not mushy
Squeezed kale	Forms a compact, nearly dry mass; no water drips when squeezed
Pesto in processor	Thick, spreadable paste with small walnut flecks; vivid green
Pesto coating pasta	Each strand slicked with green; no pools of oil at the bottom of the bowl
Final consistency	Sauce clings to pasta; a spoonful of accumulated sauce at the bottom of the bowl is creamy, not watery

8. Recipe Notes & Troubleshooting

Issue	Cause	Fix
Pesto tastes bitter	Kale not blanched long enough; walnuts burned	Blanch full 1 minute; toast walnuts on medium heat, not high
Pesto is too thick / won't coat pasta	Not enough pasta water added	Add reserved pasta water 1 tbsp at a time while tossing
Pesto is watery / thin	Kale not squeezed dry enough	Squeeze more firmly next time; add extra walnuts (1 tbsp) to absorb moisture
Pesto turned brown / dull	Kale not shocked in ice water; over-processed	Always use ice bath; pulse, don't run continuously
Pasta clumps together	Drained too early; not tossed immediately	Toss with pesto immediately after draining; work quickly
Sauce doesn't cling	Pasta rinsed after draining	Never rinse pasta — surface starch is essential for emulsification

9. Make-Ahead Tips

• Pesto (up to 3 days ahead): Transfer the finished kale pesto to an airtight container. Press a layer of plastic wrap directly onto the surface (to prevent oxidation) and seal with a lid. Refrigerate for up to 3 days. Bring to room temperature before tossing with hot pasta.
• Freezing (up to 3 months): Spoon the pesto into an ice cube tray, freeze until solid, then transfer cubes to a freezer bag. Thaw overnight in the refrigerator or add frozen cubes directly to hot pasta (stir vigorously to melt).
• Pasta (not recommended): Cooked pesto pasta does not keep well — the sauce separates and the pasta turns mushy upon reheating. Best enjoyed immediately.

10. Variations

• Traditional basil pesto: Replace kale with 100 g fresh basil leaves (no blanching needed — use raw). Substitute pine nuts for walnuts. Proceed as directed.
• Spicy kale pesto: Add ½ teaspoon red pepper flakes to the food processor with the kale.
• Vegan / dairy-free: Replace Parmigiano-Reggiano with 3 tablespoons nutritional yeast + 1 additional tablespoon toasted walnuts. Use a rich, fruity olive oil.
• Almond-kale pesto: Substitute 50 g blanched almonds for the walnuts. Almonds give a milder, sweeter note.
• Minty kale pesto: Replace 25 g of the kale with fresh mint leaves (about ½ cup packed) for a bright, refreshing twist — excellent with lamb or grilled vegetables.

11. Wine & Drink Pairing

• White: A crisp, herbaceous Vermentino di Liguria or a grassy Sauvignon Blanc — the herbal notes mirror the kale, and the acidity cuts through the richness.
• Light red: A chillable Dolcetto or Bardolino — low tannins and bright fruit won't overpower the pesto.
• Rosé: A dry Provençal-style rosé with citrus notes complements the lemon and olive oil.
• Non-alcoholic: Sparkling water with a squeeze of lemon and a basil leaf; or an iced green tea with mint.

12. Serving Suggestions

• Serve with warm, crusty bread to mop up any remaining pesto at the bottom of the bowl.
• A simple side salad (baby arugula, shaved Parmesan, lemon vinaigrette) adds freshness and crunch.
• Top with halved cherry tomatoes sautéed briefly in olive oil for a burst of sweetness and color.
• For a heartier meal, add grilled chicken, sautéed shrimp, or crispy white beans (cannellini, pan-fried until golden).
• Finish with a final crack of black pepper and a few flaky sea salt crystals (Maldon or fleur de sel).

13. Nutritional Information (per serving)

Approximate values based on ingredients listed; actual values may vary.

14. Prep Timeline & Workflow

Time Elapsed	Action
0 min	Bring pot of salted water to a rolling boil
5 min	Strip kale leaves from stems; tear into pieces
7 min	Prepare ice water bath
8 min	Blanch kale (1 min) → transfer to ice bath → squeeze dry
10 min	Add pasta to boiling water
12 min	Toast walnuts (if using) → let cool

15. Allergen Information

• Contains: Wheat/gluten (pasta), tree nuts (walnuts), dairy (Parmigiano-Reggiano)
• Free from: Eggs, shellfish, peanuts, soy, fish, sesame (as written)
• May contain: Traces of other tree nuts if walnuts were processed on shared equipment

16. Regional Background

While pesto alla Genovese — the basil, pine nut, and Parmigiano emulsion from Liguria — is one of Italy's most famous sauces, the use of cavolo riccio (lacinato kale, also called Tuscan kale or dinosaur kale) in pesto is a more recent, innovative twist embraced by modern Italian cooks. Kale, a hardy winter green that thrives in the cool months of Northern and Central Italy, brings a deeper, more peppery character than basil, along with superior nutritional density. The substitution of walnuts (noci) for the traditional pine nuts (pinoli) is equally deliberate: walnuts are more affordable, widely available in Italy's mountainous interior, and their slightly bitter, earthy flavor stands up to kale's boldness better than the sweet delicacy of pine nuts. This dish embodies the Italian principle of riuso (clever reuse) — transforming a humble, sometimes-overlooked green into something vibrant and satisfying through simple, intelligent technique.

17. Scaling

• For 2 servings: Halve all ingredients. Use 200 g pasta, 100 g kale, 25 g walnuts, 25 g Parmesan, 1 garlic clove, 40 ml olive oil, ½ tbsp lemon juice. Blanching and blending time are unchanged.
• For 8 servings: Double all ingredients. Blanch kale in two batches or use a larger pot to avoid crowding. Blend pesto in two batches in the food processor (it won't fit all at once). Use a 14-inch skillet or extra-large serving bowl for tossing.

18. Conversion Table (Volume)

Metric	US Standard
5 ml	1 tsp
15 ml	1 tbsp
60 ml	¼ cup
80 ml	⅓ cup
240 ml	1 cup
50 g walnuts	≈ ½ cup
50 g Parmesan	≈ ½ cup grated
200 g kale	≈ 8 cups packed torn leaves

19. Chef's Final Notes

• Don't skip the squeeze. The single most important step for a vibrant, creamy pesto is squeezing the blanched kale absolutely dry. Residual water dilutes the oil, prevents emulsification, and turns the pesto grayish. Squeeze until your hands ache — then squeeze once more.
• Salt the pasta water aggressively. It should taste like the sea. The pasta's interior gets seasoned from the inside out, and that seasoning carries into the final dish.
• Reserve more pasta water than you think you need. The starchy water is the key to a silky, emulsified sauce. You may not use all of it, but running out mid-toss is a recipe for a dry, clumpy mess.
• Don't over-process the pesto. A coarse, rustic texture with visible walnut and kale flecks is far more appealing than a homogenized green paste. Pulse, don't let the motor run.
• Serve immediately. Pesto pasta waits for no one. As it sits, the sauce thickens and the pasta absorbs the oil. If you must hold it, toss with an extra tablespoon of pasta water just before serving to revive the emulsion.
• The lemon juice is non-negotiable. Even a small squeeze brightens the entire dish, cutting through the kale's earthiness and the oil's richness. Taste the pesto before adding it — if it tastes flat, add a few more drops.

Recipe from The Italian Kitchen by Vita Milanese — Volume 1 · Pasta Perfetto. Discover all volumes on the ebook page.