Preheat Oven: Set your oven to 375°F (190°C).

Cook Beef Mixture:
Heat olive oil in a pan over medium heat.
Add chopped onion and cook until translucent.
Add ground beef, breaking it apart as it cooks.
Season with garlic powder, Italian seasoning, salt, and black pepper.
Once fully cooked, drain any excess fat.

Prepare the Base:
Place the mini buns (or English muffins) on a baking sheet, cut side up.
Lightly toast them in the oven for 5 minutes to prevent sogginess.

Assemble the Mini Pizza Burgers:
Spread pizza sauce over each bun.
Add a layer of cooked beef.
Place a slice of tomato on top.
Sprinkle mozzarella and Parmesan cheese generously.
Add a pinch of Italian seasoning on top.

Bake:
Place the tray in the oven and bake for 10-12 minutes or until the cheese is bubbly and golden brown.

Serve & Enjoy:
Let them cool for a minute before serving.
Optionally, sprinkle red pepper flakes for extra spice.