Open Faced Mushroom and Onion Steakburgers Recipe

These mouthwatering open faced mushroom and onion steakburgers are an elegant way to serve a burger for a special meal or as an appetizer. Fresh hoagie rolls are slathered with garlic butter then topped with seasoned ground sirloin and baked until the beef is cooked. Top with sauteed mushrooms and caramelized onions they're ready to smother with cheese. Place under the broiler until the cheese is gooey and golden. Cut into pieces and serve with dippers as an appetizer, game day treat or a small bites meal.