Steak House Burgers

• 5 tablespoons mayonnaise
• 4-1/2 teaspoons prepared horseradish
• 1/4 cup shredded Parmesan cheese
• 3 tablespoons butter, softened, divided
• 1/2 teaspoon garlic powder
• 4 hamburger buns, split
• 1-1/2 pounds ground beef
• 1/4 cup steak sauce
• 4-1/2 teaspoons onion soup mix
• 4 slices Swiss cheese
• 1-1/2 pounds sliced fresh mushrooms
• 2 green onions, chopped
• 1/4 cup French-fried onions
• Sliced tomato and lettuce, optional

1. In a small bowl, combine mayonnaise and horseradish; cover and refrigerate until serving. In another small bowl, combine Parmesan cheese, 1 tablespoon butter and garlic powder; spread over bun tops. Set aside.
2. In a large bowl, combine the beef, steak sauce and onion soup mix. Shape into four patties.
3. Moisten a paper towel with cooking oil; using long-handled tongs, lightly coat the grill rack. Grill burgers, covered, over medium heat or broil 4 in. from the heat for 4-5 minutes on each side or until a thermometer reads 160u0b0 and juices run clear.
4. Top with Swiss cheese; cover and grill 1-2 minutes longer or until cheese is melted. Place buns, cut side down, on grill for 1-2 minutes or until toasted.
5. Meanwhile, in a large skillet, saute mushrooms and green onions in remaining butter until tender. Serve burgers on buns; top with horseradish sauce, French-fried onions, mushroom mixture and, if desired, tomato and lettuce.

mayonnaise, horseradish, parmesan cheese, butter, garlic, buns, ground beef, steak sauce, onion soup mix, swiss cheese, mushrooms, green onions, onions, tomato

Taken from www.tasteofhome.com/recipes/steak-house-burgers/ (may not work)