Cook beef mixture:
Heat olive oil in a skillet over medium heat.
Add chopped onion and cook until translucent.
Add ground beef and break it up as it cooks.
Season with garlic powder, Italian seasoning, salt and black pepper.
Drain off excess fat after cooking.
Prepare the crust:
Place the mini buns (or English muffins) cut side up on a baking sheet.
Lightly toast in the oven for 5 minutes to prevent them from getting soggy.
Assemble the mini pizza burgers:
Spread pizza sauce on each bun.
Add a layer of cooked beef.
Place a slice of tomato on top.
Sprinkle mozzarella and parmesan generously on top.
Sprinkle a pinch of Italian seasoning on top.
Bake:
Place the sheet in the oven and bake for 10-12 minutes or until the cheese is bubbling and golden brown.
Serve and enjoy:
Let cool for a minute before serving. Optionally sprinkle red pepper flakes on top for additional spice.
