Creating Pizza Pasta Bake is incredibly easy when you follow these steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Pasta: Boil water in a large pot. Cook the pasta according to package instructions until al dente. Drain and set aside.
3. Mix Ingredients: In a large bowl, combine the cooked pasta, pizza sauce, 1 1/2 cups of mozzarella cheese, pepperoni, Italian seasoning, garlic powder, and red pepper flakes. Stir well to combine.
4. Transfer to Baking Dish: Pour the pasta mixture into a 9×13 inch baking dish, spreading evenly.
5. Add Cheese Topping: Sprinkle the remaining mozzarella cheese and grated parmesan over the top of the pasta mixture.
6. Bake: Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the cheese is melted and bubbly.
7. Cool Down: Remove from the oven and allow it to cool for a few minutes before serving.
8. Garnish: Optionally, garnish with fresh basil leaves for an extra touch of flavor.
9. Serve: Slice and serve warm to enjoy the cheesy goodness.

These steps will guide you through creating this incredible dish in no time!