Creating a delicious Pizza Pasta Bake is a straightforward process. Follow these simple steps to make it with ease:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Cook Pasta: Boil a large pot of salted water. Cook the penne pasta according to package instructions until al dente. Drain and set aside.
3. Sauté Vegetables: In a large skillet, heat the olive oil over medium heat. Add the diced onion and sauté until translucent, about 3-4 minutes.
4. Cook the Meat: Add the minced garlic and ground beef (or Italian sausage) to the skillet. Cook until the meat is browned and cooked through, breaking it up with a spatula.
5. Combine Ingredients: Stir in the marinara sauce, dried oregano, and dried basil. Season with salt and pepper to taste. Let the sauce simmer for about 5 minutes.
6. Mix Pasta and Sauce: In a large bowl, combine the cooked pasta with the meat sauce. Add half of the pepperoni slices and mix well.
7. Layer in Baking Dish: Spread half of the pasta mixture into a 9×13-inch baking dish. Sprinkle half of the mozzarella cheese over the top.
8. Add Remaining Mixture: Layer the rest of the pasta mixture on top and finish with the remaining mozzarella cheese, Parmesan cheese, and the remaining pepperoni slices.
9. Bake: Place the baking dish in the preheated oven and bake for 30-40 minutes, or until the cheese is melted and bubbly.
10. Cool Before Serving: Once baked, remove the dish from the oven and allow it to cool for 5-10 minutes before serving.

These instructions create a tasty, cheesy masterpiece that everyone will love!