Mom's Best Recipes
Recipe

Arugula Pesto

Peppery arugula pesto with garlic, nuts, Parmesan, olive oil, and lemon to mellow the bite.

Author By Pip
4.8
A small glass jar of arugula pesto on a wooden kitchen counter with a spoon, surrounded by fresh arugula, a lemon half, garlic cloves, and a small bowl of grated Parmesan in soft natural light
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Pull up a chair. Our little hedgehog host is about to hand you a sauce that wakes up just about everything it touches.

Arugula pesto is peppery, punchy, and wonderfully green, with garlic, nuts, Parmesan, and olive oil doing their cozy, familiar thing. The only twist is arugula’s bite, which is delicious, but sometimes it needs a tiny blanket. Our hedgehog host tames any bitterness with lemon and, if you want, a handful of spinach for extra mellow, extra silky vibes.

Arugula, garlic cloves, a lemon, a wedge of Parmesan, and a small bowl of nuts arranged on a cutting board on a bright kitchen counter

Why It Works

  • Big flavor, fast: A quick blitz in a food processor makes a thick, spoonable pesto in about 10 minutes.
  • Peppery, not harsh: Lemon juice and zest round out arugula’s bite so it tastes lively instead of bitter.
  • Flexible texture: Keep it thick for sandwiches, or loosen it with pasta water for a glossy sauce.
  • Meal-prep friendly: Stores well in the fridge and can be frozen in small portions for easy weeknight wins.

Pairs Well With

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Storage Tips

How to Store Arugula Pesto

  • Fridge: Spoon pesto into a jar or airtight container and smooth the top. Pour a thin layer of olive oil over the surface to limit browning. Refrigerate for up to 4 to 5 days. Keep it cold and use a clean spoon each time.
  • Freezer: Freeze in an ice cube tray or small containers for up to 3 months. Thaw overnight in the fridge, then stir well. If it looks a little separated, that is normal. Just mix it back together.
  • Freshness tip: Pesto can darken on top from air exposure. The oil layer helps, and a piece of plastic wrap pressed directly onto the surface also works. Minimizing headspace in the jar helps, too.

Common Questions

Common Questions

Why does arugula pesto taste bitter?

Arugula is naturally peppery, and older leaves can lean more bitter. Bitterness also stands out more when the pesto is under-salted or missing acid. This recipe uses lemon juice and zest to brighten and balance.

How do I make it less bitter without losing the arugula flavor?

Try one or more of these:

  • Add 1 to 2 tablespoons lemon juice, a little at a time, tasting as you go.
  • Add a handful of baby spinach (about 1 packed cup) to mellow the greens while keeping the pesto green and fresh.
  • Make sure the pesto is properly salted. A pinch can make the difference between sharp and balanced.

What nuts work best?

Pine nuts are classic, but walnuts make a lovely earthy pesto, and almonds or pistachios are great too. Toasting the nuts adds a deeper, warmer flavor.

Can I make arugula pesto without a food processor?

Yes. Use a blender (you may need to stop and scrape more often), or chop everything very finely and mash it into a paste with a mortar and pestle. If hand-mixing, grate the garlic and use finely grated Parmesan so it blends smoothly.

How much pesto should I use for pasta?

A good starting point is 1/2 cup pesto for 12 ounces of pasta. Start with 2 to 4 tablespoons hot pasta water and add more, 1 tablespoon at a time, until it coats the noodles and turns silky.

Can I use pre-washed arugula?

Absolutely. Just make sure it is very dry so your pesto stays thick and not watery.

Any easy swaps for allergies or what I have on hand?

Yes. Swap walnuts with almonds, pistachios, or pine nuts. For nut-free pesto, try sunflower seeds or pepitas. Parmesan can be swapped for Pecorino Romano, or use a dairy-free Parmesan alternative if needed.

Our little hedgehog host has a soft spot for sauces that make leftovers feel brand new. Arugula pesto is one of those kitchen tricks: one spoonful and suddenly your plain pasta, sleepy sandwich, or roasted veggies look like they dressed up for dinner. Also, it smells like you had a plan all along, which is my favorite kind of kitchen mischief.