- Preheat oven to 400 degrees.
- Place meatballs in an 8 x 8-inch pan. Pour buffalo wing sauce over meatballs and then cover with aluminum foil.
- Bake for 35 minutes or until bubbly. Split rolls and broil open-faced on a baking sheet for 1-2 minutes, or until lightly toasted.
- Layer lettuce, 2 tomato slices, and red onion rings on rolls. Spoon 5 meatballs with desired amount of sauce on each sandwich. Spread tablespoon dressing over top. Serve immediately.