Creating the Pumpkin Pasta Bake is straightforward. Just follow these easy steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Pasta: Boil a large pot of salted water. Add pasta and cook until al dente, following package directions. Drain and set aside.
3. Prepare Sauce: In a mixing bowl, combine pumpkin puree, heavy cream, minced garlic, thyme, sage, salt, pepper, and red pepper flakes. Stir until well mixed.
4. Combine Mixtures: In a large bowl, mix the cooked pasta with the pumpkin sauce until evenly coated.
5. Add Cheese: Fold in half of the mozzarella and Parmesan cheese, combining well.
6. Transfer to Baking Dish: Pour the pasta mixture into a greased 9×13-inch baking dish, spreading it out evenly.
7. Top With Cheese: Sprinkle the remaining mozzarella and Parmesan cheese over the top of the pasta.
8. Bake: Place in the preheated oven and bake for 30-35 minutes, or until golden and bubbly.
9. Cool: Once done, remove from the oven and let cool for 5-10 minutes.
10. Garnish: Top with fresh parsley or basil for a touch of color and freshness.

With these steps, you will create a comforting and delicious Pumpkin Pasta Bake that will surely impress!