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Ingredients
- 1 1/4 lb ground beef
- 1 teaspoon salt, divided
- 1/4 teaspoon plus 1/8 teaspoon black pepper, divided
- 1 tablespoon olive oil
- 1/2 cup thinly sliced yellow onion
- 4 ounces sliced exotic mushrooms or 2 cups sliced button mushrooms
- 2 teaspoons Worcestershire sauce
- 4 slices deli-style sliced cheese, such as colby-jack cheese
- 4 onion rolls, split, lightly toasted or grilled
Preparation
Step 1
Combine the beef, 3/4 teaspoon salt and 1/4 teaspoon black pepper. Shape into 4 patties, 1/2-inch thick.
Grill the patties, 4 to 5 minutes per side or until the internal temperature reaches 160˚F.
Meanwhile, heat the olive oil in a large nonstick skillet over medium-high heat. Add the onions and cook for 2 minutes. Stir in the mushrooms, Worcestershire sauce, remaining 1/4 teaspoon salt and 1/8 teaspoon black pepper. Cook and stir for 5 minutes or until tender.
Place cheese slices over patties during the last minute of cooking. Serve mushroom burgers in rolls topped with mushroom and onion mixture.