Sloppy Joes Pizza -In a large skillet over medium heat, cook onions and meat until meat is brown and onions are soft. Then add pepperoni and garlic cook for additional 1-2 mins or until pepperoni starts to warm up. Drain and add sauce, Italian seasonings, and mushrooms or additional toppings. Cook for 5 minutes or until heated. To serve, top mixture on buns and cover with grated cheese.