Creating Autumn Sausage Pasta Squash is straightforward if you follow these steps:

1. Preheat the Oven: Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
2. Prepare the Squash: Spread the diced butternut squash on the prepared baking sheet. Drizzle with olive oil, and season with salt, pepper, sage, and thyme. Toss to coat evenly.
3. Roast the Squash: Roast the squash in the preheated oven for about 25 minutes, or until tender and lightly caramelized, stirring halfway through.
4. Cook the Pasta: While the squash is roasting, cook the pasta according to package instructions until al dente. Drain and set aside.
5. Cook the Sausage: In a large skillet over medium heat, add the Italian sausage. Cook until browned and cooked through, breaking it into crumbles as it cooks, about 5-7 minutes.
6. Add Onion and Garlic: Once the sausage is cooked, add the diced onion and minced garlic to the skillet. Sauté until the onion is translucent, about 3-4 minutes.
7. Combine Ingredients: Add the roasted squash and cooked pasta to the skillet. Gently toss everything together, ensuring the pasta is well coated with the sausage and squash mixture.
8. Add Cheese: Sprinkle grated Parmesan cheese over the pasta and stir until melted and evenly distributed.
9. Season to Taste: Taste and adjust seasoning with additional salt and pepper, if needed.
10. Serve Warm: Transfer the pasta to serving plates or a large serving bowl. Garnish with fresh parsley if desired.

These steps will guide you to create a delightful Autumn Sausage Pasta Squash that captures the essence of the season.