Recipe

Herby Walnut Pesto Pasta

A bright, nutty, weeknight pasta with a punchy herb pesto you can blitz in minutes.

By Matt Campbell

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4.8

Bowl of pasta tossed in vibrant green herb and walnut pesto, topped with grated Parmesan and toasted walnuts on a wooden table in natural light

I love a recipe that feels a little fancy but behaves like a weeknight. This one is exactly that: cozy pasta, a bold green sauce, and just enough toasted walnut crunch to make you stop mid-bite and reassess how something this simple tastes this good.

Classic basil pesto is great. But this herbal and nutty version leans into what you probably already have: a mix of herbs, walnuts (usually cheaper than pine nuts), a lemony pop, and a smart trick that keeps the sauce silky even if your blender is not the strongest soldier.

Fresh herbs, walnuts, garlic, lemon, and Parmesan arranged on a cutting board next to a small food processor in a home kitchen If you can boil pasta and press a button on a food processor, you are in business.

Why It Works

Big flavor, minimal drama: A mixed-herb pesto tastes layered and restaurant-y without extra steps.
Walnuts bring the nutty backbone: Toasting them for a few minutes can make the sauce taste deeper and less bitter.
Starchy pasta water is the secret: It loosens the pesto into a glossy sauce that clings to noodles instead of sitting in clumps.
Bright finish: Lemon zest and a squeeze of juice keep everything lively, not heavy.

Pairs Well With

Storage Tips

Storing pesto

Fridge: Spoon pesto into a small jar, smooth the top, then add a thin layer of olive oil to seal it. Cover and refrigerate. It is best within 4 to 5 days. If it smells off or looks questionable, skip it.
Freezer: Freeze pesto in an ice cube tray, then pop cubes into a freezer bag. Best within 3 months for flavor. Thaw overnight in the fridge or melt gently in a bowl set over warm water.

Storing dressed pasta

Fridge: Store leftover pesto pasta in an airtight container for up to 3 days.
Reheat: Warm in a skillet over medium-low with a splash of water (or broth). Stir until glossy again. Finish with a squeeze of lemon to wake it back up.

Common Questions

Can I use all basil instead of mixed herbs?

Absolutely. Use the same total amount of herbs. Mixed herbs just give a more interesting, less one-note pesto.

Do walnuts make pesto bitter?

They can, especially if the walnuts are older, the skins are very dark, or the mixture gets overworked. Use fresh walnuts and toast them lightly until fragrant. That step can make the flavor taste deeper and less sharp.

My pesto turned dark. Did I mess it up?

Nope. Herbs oxidize. It still tastes great. For the brightest green, the biggest help is storage: press a thin layer of olive oil on top of the pesto. If you are making it ahead, you can also stir in the lemon juice at the end instead of blending it in. If you are eating right away, blending the lemon in is totally fine.

Can I make it dairy-free?

Yes. Swap Parmesan for 2 to 3 tablespoons nutritional yeast, plus a pinch more salt. You can also add a spoonful of miso for extra savoriness.

What pasta shape works best?

Anything that grabs sauce. Try spaghetti, linguine, fusilli, or gemelli. Short shapes are especially good for catching little bits of walnut and cheese.

Any allergy swaps?

Nut-free: Use sunflower seeds or pepitas instead of walnuts (toast them the same way). Dairy-free: See the nutritional yeast swap above. Heads up: this recipe contains tree nuts and dairy as written.

Matt Campbell

I have always had a huge passion for the culinary arts, people, working as a team, and so on. I wanted to pursue my love for cooking initially at Virginia Commonwealth University with a culinary arts degree; however, I instead decided to apply myself and acquire more practical skills. My end goal is to eventually open my own restaurant or similar establishment.

Kitchen Essentials

Large pot for boiling pasta
Colander
Small skillet (for toasting walnuts)
Food processor or blender
Microplane or fine grater (for zest and Parmesan)
Measuring cups and spoons

The first time I made walnut pesto, it was a pantry situation. No pine nuts, half a bunch of herbs looking tired, and a very real need for dinner to happen without me doing the most. I toasted the walnuts, blitzed everything with lemon, and suddenly the kitchen smelled like I had a plan. Now it is my go-to when I want something bright and cozy at the same time, which is basically always.