01 -
Set your oven to 375°F (190°C). Lightly grease a baking dish to prevent sticking.
02 -
In a large bowl, mix the ground meat, eggs, Parmesan cheese, Italian seasoning, garlic powder, onion powder, salt, and black pepper until well combined.
03 -
Spread the meat mixture evenly in the greased baking dish, pressing it down to create a solid base.
04 -
Bake for 20-25 minutes until fully cooked and slightly firm.
05 -
Carefully drain any grease or liquid to keep the casserole firm.
06 -
Spread marinara sauce over the baked meat base, then sprinkle mozzarella cheese evenly.
07 -
Arrange pepperoni slices, bell peppers, mushrooms, and olives over the cheese. Add red pepper flakes for extra heat.
08 -
Return to the oven and bake for 10-15 minutes until the cheese is melted and bubbly.
09 -
Let it rest for 5 minutes before slicing and serving.