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Butternut Squash Pasta Sauce Recipe

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4.5 from 69 reviews

This creamy and flavorful Butternut Squash Pasta Sauce is made by roasting butternut squash, tomatoes, and onions to bring out their natural sweetness, then blending them into a smooth sauce. Tossed with your favorite pasta, it creates a comforting, nutritious meal perfect for any night of the week.

Ingredients

Vegetables

  • 16 ounces frozen diced butternut squash
  • 1.5 cups fresh chopped tomatoes
  • 1/2 medium yellow onion, sliced

Pantry

  • 2 tablespoons olive oil
  • 1 teaspoon salt
  • 1/4 teaspoon ground black pepper
  • 1/2 teaspoon dried thyme

Pasta

  • 1 pound dried pasta
  • 1/3 cup reserved pasta water

Instructions

  1. Preheat and Prepare Vegetables: Preheat your oven to 450°F and line a baking sheet with parchment paper to prevent sticking and make cleanup easier.
  2. Arrange Vegetables: Spread the frozen butternut squash, chopped tomatoes, and sliced onion evenly across the prepared baking sheet for even roasting.
  3. Season the Vegetables: Drizzle 2 tablespoons of olive oil over the vegetables, then sprinkle with 1 teaspoon of salt, 1/4 teaspoon of ground black pepper, and 1/2 teaspoon of dried thyme. Toss everything together until all pieces are well coated.
  4. Roast: Bake the seasoned vegetables in the oven at 450°F for 20 minutes until they are tender and develop a light caramelization, enhancing their natural sweetness.
  5. Cook Pasta: While the vegetables roast, bring a large pot of salted water to a boil and cook 1 pound of dried pasta according to package directions. Before draining, reserve 1/3 cup of the pasta cooking water to use in the sauce.
  6. Blend the Sauce: Transfer the roasted vegetables and reserved pasta water to a blender. Blend until you achieve a smooth and creamy sauce consistency.
  7. Combine Pasta and Sauce: Return the drained pasta to the cooking pot. Pour the blended butternut squash sauce over the pasta and toss thoroughly to ensure every strand is coated evenly.
  8. Serve: Serve immediately, optionally garnished with freshly grated Parmesan cheese or a plant-based Parmesan alternative for added flavor.

Notes

  • For a vegan option, omit Parmesan or use plant-based Parmesan cheese.
  • If you prefer a thinner sauce, add more reserved pasta water a little at a time while blending.
  • Frozen butternut squash can be substituted with fresh; roast a bit longer if fresh is used.
  • Fresh thyme can be used instead of dried for a more aromatic flavor.
  • Leftover sauce can be stored in the refrigerator for up to 3 days and reheated gently.