Heat olive oil in a large skillet over medium heat. Add the sliced onions and bell peppers, cooking until they become tender and slightly caramelized.

Add the ground beef or thinly sliced steak to the skillet. Break it apart and cook until browned while stirring occasionally.

Season the beef and vegetables with garlic powder, onion powder, salt, and black pepper. Stir well so the seasoning coats the meat and peppers evenly.

Divide the mixture into serving bowls and sprinkle shredded provolone or mozzarella cheese over the top. Cover briefly so the cheese melts into a creamy topping. Garnish with chopped parsley before serving.