Asiago Portabella Mushroom Burger

Name: Asiago Portabella Mushroom Burger
Prep time: 10 min
Cook time: 10 min
Total time: 20 min
Cuisine: American, Asian
Ingredients: 1/2 lb ground beef; 1 teaspoon seasoning salt; 1 teaspoon onion powder; 1 dash Worcestershire sauce; 1 tablespoon butter; 1/2 lb portabella mushroom, chopped not too fine, but not too big; 1 garlic clove; 4 tablespoons alfredo sauce; 4 onion rolls; 1 tablespoon parmesan cheese; 4 slices asiago cheese