Broccoli-Walnut Pesto Pasta
Updated March 20, 2025

- Total Time
- 25 minutes
- Rating
- Comments
- Read comments
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Ingredients
- Kosher salt (such as Diamond Crystal)
- 4cups broccoli florets (10 ounces from 2 crowns)
- 1pound cut pasta, such as medium shells
- 1large garlic clove, smashed
- 2packed cups fresh mint leaves (about 2 ounces from one small bunch)
- Black pepper
- ½cup extra-virgin olive oil, plus more for serving
- 1lemon, zested and juiced
- Parmigiano-Reggiano, for serving
- ½cup walnuts, chopped
Preparation
- Step 1
Bring a large saucepan of water to a boil over high heat. Add ¼ cup salt, then add the broccoli. Cook, stirring occasionally, until bright green and just tender, about 5 minutes. Use a spider or slotted spoon to transfer to a food processor; keep the water boiling.
- Step 2
Drop the pasta into the boiling water and cook according to the package’s directions for al dente. Reserve ½ cup pasta cooking water.
- Step 3
Meanwhile, add the garlic to the broccoli and pulse, scraping the bowl occasionally, until smooth. Add the mint, 1 teaspoon salt and ½ teaspoon pepper. Pulse until smooth, then add the oil with the machine running.
- Step 4
Drain the pasta well and transfer to a large bowl. Stir in the pesto. Add 2 tablespoons lemon juice and ½ teaspoon each salt and pepper and toss until the pasta is evenly coated. If the mixture seems thick, fold in the reserved pasta water, 1 tablespoon at a time. The mixture will thicken as it cools, so you want it to be saucy. Season to taste with salt and pepper.
- Step 5
Divide among serving dishes and top with lemon zest, then grate cheese over. Sprinkle with the walnuts, grind more black pepper on top, then drizzle with olive oil. Serve hot, warm or room temperature.
- The pasta with the pesto will keep in the refrigerator for up to 3 days. Garnish with the lemon zest, cheese, walnuts, pepper and oil right before serving. Note that the pesto will oxidize after a day and darken into a khaki green. If packing for lunch, put the pasta in an airtight container and scatter the garnishes on top. If you want to keep the walnuts extra crunchy, you can keep them separate and sprinkle them on right before eating.
Private Notes
Comments
For those commenting on the salt, "salt" is not what is off in the recipe. 1/4 cup is not that much in a pot of water. What is at issue is the size of the "saucepan," which is not specified. Here's a recommendation: use the right amount of salt for the pasta pot you're using. It should taste like the sea. Most recipes recommend cooking pasta with a lot of water. Personally, I prefer less water, so that the water is starchy enough to really help thicken the sauce.
We tossed the stems with olive oil the roasted them in the oven - made a great addition to the pasta! DELICIOUS (and super easy)
This was fantastic. Packed way more flavor than expected. Added a teaspoon of red pepper flakes and a tad more lemon juice and garlic. Really really great. Broccoli and mint are a dynamite combo.
I made this too times and tasted good. However, the next day the leftovers had an off smell. My guess is the raw garlic plus lemon didn’t age well in the fridge. This happened both times. Anyone have an idea as to why the taste and smell gets weird after day one?
I just used this as an idea for pesto. I didn't blanch the broccoli, I used walnuts, pepitos, pecorino, garlic, evoo, and black pepper. Threw it all in the blender and spread it over sauteed chicken (small pieces of breasts). Tossed it around on med heat and it was so good on top of a green salad. Even better cold the next day! So I can't speak to the salty water!
This is a nice way to eat broccoli! I skipped the mint, didn't have any, used pecorino (did have, and used a huge lemon. I have tossed with browned chicken pieces and added to a salad, broiled on salmon, tossed into noodles.... Versatile!