Creating your own Butternut Squash Pasta Sauce is easy. Just follow these steps:

1. Preheat the Oven: Preheat your oven to 400°F (200°C).
2. Prepare the Squash: Cut the butternut squash in half lengthwise. Remove the seeds and stringy insides. Brush the cut sides with olive oil and sprinkle with salt and pepper.
3. Roast the Squash: Place the squash cut side down on a baking sheet lined with parchment paper. Roast in the preheated oven for 25-30 minutes, or until tender.
4. Sauté Aromatics: While the squash roasts, heat the remaining olive oil in a large skillet over medium heat. Add the diced onion and sauté until translucent, about 5 minutes. Stir in the minced garlic and cook for an additional minute.
5. Scoop the Flesh: Once the squash is done, let it cool slightly. Use a spoon to scoop the flesh out from the skin and add it to the skillet with the onions and garlic.
6. Blend the Sauce: Pour the vegetable broth into the skillet and season with nutmeg, cinnamon, salt, and pepper. Use an immersion blender to puree the mixture until smooth and creamy. (You can also transfer it to a blender for this step.)
7. Add Cream: Stir in the heavy cream or coconut milk until combined. Adjust seasoning as needed.
8. Cook the Pasta: Prepare your pasta according to package instructions in a separate pot. Drain and reserve some pasta water.
9. Combine: Toss the cooked pasta in the sauce. If needed, add reserved pasta water to loosen the sauce to your desired consistency.
10. Serve: Toss in the grated Parmesan cheese (if using) and mix until fully incorporated.

By following these simple steps, you’ll create a delicious sauce that complements your pasta beautifully.