Creating Chicken Parmesan Casserole is a breeze with these clear directions:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Prepare Chicken: In a large mixing bowl, combine shredded chicken with marinara sauce. Add Italian seasoning, garlic powder, onion powder, salt, and pepper to taste. Mix well to ensure the chicken is evenly coated.
3. Cook Pasta: If you haven’t done so already, cook the pasta according to package instructions. Drain and set aside.
4. Combine Ingredients: In a large baking dish, combine the cooked pasta and chicken mixture. Stir to evenly distribute the chicken and sauce throughout the pasta.
5. Add Cheeses: Sprinkle half of the mozzarella cheese and half of the Parmesan cheese over the chicken and pasta mixture. Then, top with the remaining chicken mixture.
6. Top Layer: Finish the casserole by layering the rest of the mozzarella cheese and Parmesan cheese on top.
7. Bake: Place the casserole in the oven and bake for 30-35 minutes, or until the cheese melts and bubbles, forming a delicious golden crust.
8. Garnish: Remove from the oven and let it cool for a few minutes. Garnish with fresh basil or parsley if desired.

These straightforward steps will result in a mouth-watering casserole that combines the classic flavors of Chicken Parmesan in a nourishing and satisfying way!