Cilantro Pesto Pasta with Toasted Almonds

There is something truly wonderful about the scent of fresh cilantro hitting steaming pasta. That vivid, bright green aroma makes the meal feel nourishing and veggie forward, even as you enjoy a hearty portion of pasta.

When I first tackled this recipe, I blended the oil and herbs for too long, which heated the sauce and left it tasting dull. While still edible, it lost the vibrant, raw spark essential to a great pesto. These days, I stick to quick, short bursts with the blender.

The result is a dish that avoids the heaviness of cream without feeling like just oil and herbs. This Cilantro Pesto Pasta offers a rustic texture from the almonds and a bright lemon zing that balances the richness perfectly.

Why This Pesto Actually Works

• Starchy Water: Adding the cloudy water from the pot helps the oil and cheese bind to the noodles instead of sliding off.
• Acid Balance: Lemon juice breaks down the heavy feel of the olive oil and keeps the cilantro tasting bright.

If you've already tried my Classic Basil Pesto, you'll notice this version is much zingier and has a different kind of earthiness.

Recipe Specs

Here is the breakdown. This recipe yields 4 servings and takes approximately 25 minutes to prepare. It is a great option if you are pressed for time and can't spend an hour in the kitchen.

The Essential Ingredient List

The cilantro is the star, but the almonds provide the body. I use blanched almonds because they toast more evenly and don't bring that burnt skin bitterness. The Parmesan adds the salt and the "umami" that makes the sauce cling to the pasta.

For the base, I prefer fusilli or penne. The spirals and holes act like little scoops for the sauce, ensuring you get a bit of pesto in every single bite. If you use spaghetti, the sauce tends to pool at the bottom of the bowl.

Tools You'll Need Today

• Large pot for boiling water
• Colander for draining
• Food processor (a small one works best for these quantities)
• Tongs for tossing the pasta
• Measuring cups and spoons

Step by step Cooking Guide

1. Boil a large pot of water with 2 tbsp salt. Cook the pasta until al dente (usually 8-11 mins depending on the brand).
2. Save 1 cup of the starchy pasta water before draining. Note: This is the most important part for the sauce texture.
3. Drain the pasta and return it to the pot, removed from the heat.
4. Put the Parmesan, garlic, toasted almonds, and cilantro in the food processor. Pulse until the mixture is coarsely chopped.
5. Switch to low speed and gradually pour in the lemon juice and olive oil. Process until the texture is velvety but still has a slight grit.
6. Stir in the black pepper and salt.
7. Spoon the pesto over the warm pasta.
8. Mix in the saved pasta water 2 tablespoons at a time. Toss vigorously with tongs until the sauce becomes glossy and creamy.

Solving Common Sauce Issues

Sometimes the flavor can go a bit sideways if your garlic is too strong or your herbs aren't fresh. If the sauce feels too "sharp," a tiny bit of sweetness can balance it out.

Fixing a Bitter Pesto

This usually happens with raw garlic. Stir in a teaspoon of honey or maple syrup to neutralize the bite without making it sweet.

Preventing Sauce Separation

If the oil starts to pool, you probably didn't use enough pasta water. Add another splash of water and toss hard to re emulsify the fats.

Managing a Thin Sauce

If it's too watery, just stir in an extra tablespoon of grated Parmesan. It thickens the sauce instantly.

Best Pairings for This Dish

This Cilantro Pesto Pasta is vibrant enough to shine on its own, but it really benefits from a bit of contrast. I often pair it with charred broccolini or a refreshing cucumber salad to maintain a light feel.

For those wanting added protein, grilled shrimp or a seared salmon fillet are fantastic options. The zestiness of the pesto beautifully offsets the fatty notes of the fish. Avoid heavy cream based sides, however, as they tend to clash with the fresh herbs.

Storage and Waste Tips

Store any extra pasta in a closed glass container in the refrigerator for up to 3 days. When reheating, stir in a teaspoon of water or a splash of olive oil to revive the sauce, since the noodles often absorb the liquid while stored.

As for the pesto, you can freeze it in ice cube trays for 2 months, then transfer the frozen cubes to a freezer bag. To stop the top from browning while refrigerated, create a seal by pouring a thin layer of olive oil over the surface.

Avoid tossing those cilantro stems! They are full of flavor. I typically mince them and add them to the food processor with the leaves, or save them to make vegetable stock.

Adjusting the Recipe Size

If you're cooking for one, you can halve the recipe easily. Just be careful with the garlic - 3 cloves for a full batch is fine, but for a half batch, 1 large clove is usually plenty. Use a smaller pot to keep the water boiling fast.

When doubling the recipe for a crowd, don't double the salt and pepper immediately. Start with 1.5x the amount and taste it first. You'll also need to work in batches if you have a small food processor to avoid over processing the sauce into a puree.

Pesto Myths Debunked

Some people think you have to blanch the cilantro in boiling water first to keep the green color. While that works, it also dulls the flavor. Using fresh lemon juice is enough to keep the Cilantro Pesto Pasta looking vibrant.

Another common thought is that you need a mortar and pestle for "real" pesto. Honestly, a food processor is just as good for everyday life. The difference in texture is minimal, and the time saved is huge.

Customizing Your Pasta

If you want a more substantial dinner, my Beef Pasta recipe is an excellent alternative for nights when you need something extra filling. For this dish, however, here are a few simple ways to customize it.

Adding a Lean Protein: Stir in chickpeas or grilled chicken breast for more protein. Both ingredients pair wonderfully with the herbal notes of the Cilantro Pesto Pasta.

Making it Vegan: Replace the Parmesan with a pinch more salt and 2 tablespoons of nutritional yeast. Use walnuts instead of almonds to get a richer, creamier texture without using dairy.

The Pasta Salad Twist: Allow the pasta to cool completely before stirring in the pesto. Add diced cucumber and halved cherry tomatoes for a refreshing cold lunch that's perfect for meal prep.

Adding a Spicy Kick: Mix 1 tsp red pepper flakes or a chopped jalapeño into the food processor. This creates a heat that balances the citrusy cilantro flavors.

Creamy Modification: For a more luxurious result, fold in 2 tablespoons of ricotta or Greek yogurt at the end. This gives the sauce a more professional, restaurant style consistency.

Decision Shortcut: Extra tang? → fold in 1 tsp lemon zest More nuttiness? → use toasted walnuts Lighter feel? → replace half the oil with pasta water