Lemony Pasta With Zucchini and Fresh Herbs

Preparation

1. Step 1

   Bring a large pot of well-salted water (2 heaping tablespoons kosher salt to about 7 quarts water) to a boil. Add pasta and cook until it is just under al dente, 1 minute less than package directions. Drain, reserving 1 cup of the pasta cooking water.

2. Step 2

   Meanwhile, prepare the zucchini or other squash: Season chunks with salt and pepper. Heat 3 tablespoons of olive oil in a large skillet over medium heat and add the squash in one layer (you may need to do this in two batches) and cook undisturbed until it begins to turn golden brown, about 3 minutes. Flip and cook 2 to 3 minutes more. Remove from the pan and set aside. Taste and season again, if necessary.

3. Step 3

   Add the remaining 1 tablespoon oil to the pan. Add the garlic and red-pepper flakes and cook until the garlic becomes translucent, about 30 seconds. Add the squash back to the pan along with the lemon juice and half the lemon zest. Toss to combine.

4. Step 4

   Add the pasta to the skillet, and toss to combine. Add ½ cup of the pasta water and the grated cheese, and toss until the cheese emulsifies and is silky. If needed, add an additional ¼ cup pasta water or more to loosen. Add the fresh herbs and toss again. Top with additional herbs and the remaining lemon zest. Serve in bowls, and pass grated cheese at the table. Season with flaky salt, if desired.