Smothered Burgers

Ingredients

• Cooking spray
• 2 cups vertically sliced onion
• 2 teaspoons sugar
• 3/4 teaspoon salt, divided
• 1/2 teaspoon freshly ground black pepper, divided
• 1 (8-ounce) package presliced mushrooms
• 2 tablespoons Worcestershire sauce
• 1 pound ground round
• 4 (1-ounce) slices Texas toast
• 1/2 cup (2 ounces) shredded Swiss cheese

Preparation

1. Prepare grill.
2. Heat a medium nonstick skillet coated with cooking spray over medium heat. Add onion; cover and cook 5 minutes, stirring occasionally. Add sugar, 1/4 teaspoon salt, and 1/4 teaspoon pepper; cook, uncovered, 5 minutes or until tender, stirring frequently. Remove onion from pan, and keep warm.
3. Heat pan coated with cooking spray over medium-high heat. Add mushrooms and 1/4 teaspoon salt; saute 5 minutes or until tender.
4. Combine 1/4 teaspoon salt, 1/4 teaspoon pepper, Worcestershire sauce, and beef. Divide mixture into 4 equal portions, shaping each into a 1/2-inch-thick patty.
5. Preheat broiler.
6. Place patties on a grill rack coated with cooking spray; grill 5 minutes on each side or until done. Place bread on grill rack; grill 1 minute on each side or until toasted.
7. Arrange bread on a baking sheet. Top each bread slice with 1 patty, 1/4 cup onion, 1/4 cup mushrooms, and 2 tablespoons cheese; broil 2 minutes or until cheese melts.