Making the Delicious Cheesy Baked Ravioli Casserole is a breeze if you follow these simple steps:

1. Preheat the Oven: Set your oven to 375°F (190°C) and allow it to preheat while you prepare the ingredients.

2. Prepare the Baking Dish: Grease a 9×13-inch baking dish with cooking spray or olive oil to prevent sticking.

3. Mix the Ricotta: In a medium bowl, combine the ricotta cheese, Italian seasoning, garlic powder, salt, and pepper. Mix well until smooth.

4. Layer the Ingredients: Spread a thin layer of marinara sauce on the bottom of the baking dish.

5. Add Ravioli: Place half of the frozen ravioli over the sauce in a single layer.

6. Spread the Ricotta Mixture: Dollop half of the ricotta mixture over the ravioli and spread it gently.

7. Add More Sauce: Pour half of the remaining marinara sauce over the ricotta layer.

8. Sprinkle Cheese: Add one cup of shredded mozzarella cheese on top of the sauce layer.

9. Repeat Layers: Repeat steps 5-8 with the remaining ravioli, ricotta mixture, marinara sauce, and finish with the remaining mozzarella cheese and grated Parmesan on top.

10. Cover and Bake: Cover the baking dish with aluminum foil and bake in the preheated oven for 20 minutes.

11. Uncover and Finish Baking: Remove the foil and bake for an additional 10-15 minutes, or until the cheese is bubbly and golden brown.

12. Cool and Serve: Once done, let the casserole cool for a few minutes before serving. Garnish with fresh basil if desired.