Preheat 375 degrees.
In a large mixing bowl mix together tomatoes and stuff mix. Reserve half of mixture. Add egg and ground beef to remaining half. Press into a greased muffin tin.
Combine remaining mixture with onion and garlic. Spread over meatloaf mixtures. Cover.
Baked 30-40 minutes or until cooked through. Top with cheese mixture. Baked 10 minutes or until cheese is melted.