Creating Pizza Casserole is simple if you follow these steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).

2. Cook Pasta: In a large pot, boil water and cook the rotini pasta according to package instructions until al dente. Drain and set aside.

3. Brown Meat: In a large skillet, cook the ground beef (or sausage) over medium heat until browned. Drain excess fat.

4. Season Meat: Add Italian seasoning, garlic powder, and onion powder to the meat. Stir to combine and cook for another 2-3 minutes.

5. Combine Ingredients: In a large mixing bowl, combine the cooked pasta, meat mixture, pizza sauce, pepperoni, bell pepper, and olives. Mix well to ensure all ingredients are evenly coated.

6. Layer in Dish: In a large baking dish, spread half of the pasta mixture evenly. Top with half of the mozzarella cheese.

7. Repeat Layers: Add the remaining pasta mixture over the cheese and top with the rest of the mozzarella and Parmesan cheese.

8. Bake: Cover the dish with aluminum foil and bake in the preheated oven for 20 minutes. Remove the foil and bake for an additional 10 minutes, or until the cheese is bubbly and golden.

9. Cool: Allow the casserole to cool for 5-10 minutes before serving. This helps the layers set a bit.

10. Garnish and Serve: Garnish with fresh parsley for a pop of color and extra flavor before serving.

With these simple steps, you’ll create a flavorful Pizza Casserole that your loved ones will want again and again!