In a large bowl, combine the ground beef, salt, pepper, garlic powder, oregano, and red pepper flakes. Mix together until everything is evenly distributed.
Transfer the mixture to a greased 9-inch pie pan. Spread the mixture evenly on the bottom of the pan and up the sides.
Spread the pizza sauce evenly on top of the meat mixture.
Sprinkle the mozzarella and Parmesan cheese on top of the pizza sauce.
Arrange the pepperoni slices on top of the cheese.
Bake for 18-20 minutes, or until the cheese is melted and bubbly and the crust is golden brown.
Remove from the oven and let cool for 5 minutes before slicing and serving.
Interesting Facts
This dish is also known as a pizza pie, meatza, or pepperoni pie.
It can be served as a main course, side dish, or appetizer.
This dish can be customized by adding your favorite toppings, such as mushrooms, olives, or peppers.