Cook the rigatoni pasta according to the package instructions. Drain and set aside.
In a mixing bowl, combine the ricotta cheese, 1 cup of mozzarella cheese, Parmesan cheese, dried oregano, and dried basil. Season with salt and pepper to taste.
In a baking dish, spread a thin layer of marinara sauce on the bottom. Add half of the cooked rigatoni pasta, then spread half of the ricotta mixture on top. Repeat with the remaining pasta and ricotta mixture.
Pour the remaining marinara sauce over the top and sprinkle with the remaining mozzarella cheese.
Bake in the preheated oven for 30-35 minutes, until the cheese is melted and bubbly.
Let the casserole cool for a few minutes before serving. Enjoy!
Notes:
You can add cooked ground beef or sausage for a meatier version.