Heat oven to 400°F. Bake rolls as directed on package. Meanwhile, cook sausage as directed on package; keep warm.
Cut each roll in half horizontally, cutting to but not through side of roll. Place rolls on ungreased cookie sheet. Place sausage link in each roll; top evenly with cheese, onion, tomato and bacon.
Bake 3 minutes or until cheese is melted. Serve warm.