Cook and crumble sausage in medium skillet until browned. Drain on paper towels.
Transfer sausage to small bowl; stir in cheese, sour cream, mayo, green onions and Worcestershire sauce.
Cut crust from bread. Cut each slice in quarters.
Spread 1 teaspoon of mixture onto each square.
Arrange squares on baking sheet. Place under hot broiler until cheese melts.