Creating Creamy Spinach Mushroom Lasagna can be broken down into straightforward steps. Follow these to ensure your lasagna comes out perfectly:

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

2. Cook Lasagna Noodles: Boil the lasagna noodles according to package instructions. Drain and set aside.

3. Sauté Vegetables: In a large skillet, heat olive oil over medium heat. Add minced garlic and sauté for about 1 minute until fragrant. Then, add sliced mushrooms, cooking until soft. Add chopped spinach and cook until wilted. Season with red pepper flakes, salt, and pepper.

4. Prepare Cheese Mixture: In a mixing bowl, combine ricotta cheese, half of the mozzarella cheese, and half of the parmesan cheese. Mix well and season to taste with salt and pepper.

5. Assemble Lasagna: Spread a thin layer of marinara sauce on the bottom of a 9×13 inch baking dish. Place 3 lasagna noodles on top, then spread half of the cheese mixture over the noodles, followed by half of the sautéed vegetables. Add another layer of marinara sauce over the vegetables.

6. Repeat Layers: Add another three noodles, followed by the remaining cheese mixture, the remaining vegetables, and another layer of sauce. Top with the last three noodles.

7. Final Layer: Spread the remaining marinara sauce over the top noodles. Sprinkle the remaining mozzarella and parmesan cheese on top.

8. Bake: Cover the dish with aluminum foil and bake in the preheated oven for 25 minutes. Remove the foil and bake an additional 20 minutes, or until the cheese is bubbly and golden.

9. Cool: Once baked, remove the lasagna from the oven and let it cool for about 10 minutes before slicing.

10. Garnish: Optionally, garnish with freshly chopped basil or parsley for a touch of color and flavor.

Follow these steps to create your luscious Creamy Spinach Mushroom Lasagna effortlessly.