Creamy Butternut Squash Pasta With Sage and Walnuts

Step 1

Heat the oven to 400 degrees. Place the squash and garlic on a sheet pan. Drizzle with 2 tablespoons olive oil, 1 teaspoon salt and 1/2 teaspoon pepper. Toss well and roast until the squash is very tender, 30 to 35 minutes, tossing twice throughout. While the squash roasts, bring a large pot of water to boil.

Step 2

Meanwhile, in a large (12-inch) skillet, heat the remaining 3 tablespoons olive oil over medium. When the oil is hot, add the sage and cook, tossing often, until the leaves begin to crisp, about 1 minute. Add the walnuts and a generous sprinkle of salt and cook, tossing often, until the sage leaves are lightly browned and crisp, 1 to 2 minutes. Using a slotted spoon, transfer the sage and nuts to a paper towel-lined plate and wipe out the skillet. Let the mixture drain for 1 minute, then add it to a small bowl with the lemon zest; toss lightly and set aside.

Step 3

Working in batches if necessary, transfer the roasted squash and garlic to a blender or food processor, along with 1 cup stock, and blend until smooth and thick. The consistency should be somewhere between a purée and a thick soup. Add more stock as needed, if it seems too thick.

Step 4

Transfer the puréed squash to the reserved skillet and keep warm over very low heat. Meanwhile, add the pasta to the boiling water, along with 1 tablespoon salt, and cook until al dente. Just before draining, ladle 1/2 cup pasta water into a measuring cup and set aside.

Step 5

Drain the pasta and add it to the sauce. Toss to coat the pasta evenly, then, off the heat, add the 1/2 cup Parmesan and toss until the cheese is incorporated. Add a few tablespoons of the reserved pasta water if the sauce seems too thick. Season to taste with salt and pepper.

Step 6

Divide the pasta among shallow bowls and sprinkle the sage, walnut and lemon zest mixture on top, and serve with extra Parmesan on the side.