Now that you have your ingredients, let’s go through the steps to create this delicious Butternut Squash and Spinach Lasagna:

1. Preheat Oven: Preheat your oven to 375°F (190°C).

2. Cook Lasagna Noodles: In a large pot, bring water to a boil. Cook the lasagna noodles according to package instructions until al dente. Drain and set aside.

3. Prepare Butternut Squash: In a large skillet, heat olive oil over medium heat. Add diced butternut squash and garlic. Sauté for about 10-12 minutes, or until the squash is tender. Season with salt, pepper, oregano, and thyme.

4. Add Spinach: Stir in the chopped spinach and cook until wilted, about 2-3 minutes. Remove from heat and set aside.

5. Prepare Cheese Mixture: In a bowl, mix together the ricotta cheese and half of the grated Parmesan cheese. Season with salt and pepper for added flavor.

6. Layer the Lasagna: In a large baking dish, spread a thin layer of marinara sauce at the bottom. Place three lasagna noodles on top. Spread half of the ricotta cheese mixture over the noodles.

7. Add Vegetable Layer: Layer half of the butternut squash and spinach mixture on top of the ricotta.

8. Add More Sauce and Cheese: Spoon some marinara sauce over the vegetables and sprinkle a layer of mozzarella cheese.

9. Repeat Layers: Repeat the layering process: noodles, ricotta, vegetables, sauce, and mozzarella, until all ingredients are used, finishing with noodles on top. Pour the remaining marinara sauce over the top and sprinkle with the remaining mozzarella cheese and Parmesan.

10. Cover and Bake: Cover the baking dish with aluminum foil (to prevent sticking, spray foil with cooking spray) and bake in the preheated oven for 25 minutes.

11. Uncover and Cook: After 25 minutes, remove the foil and bake for an additional 15-20 minutes, or until the top is bubbly and golden.

12. Cool and Serve: Once out of the oven, let the lasagna cool for about 10 minutes before serving. This resting period helps the layers set.