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French Onion Burgers

French Onion Burgers

★8.5BM
◆8.5(1)
Community Rating
8.5
Current community rating (1 vote)
About
• 6 hamburger buns, split • 4 tablespoons butter • 8 oz sliced mushrooms • 2 onions, thinly sliced • salt and freshly ground black pepper to taste • 2 pounds ground beef • 1 tablespoon Onion Soup Mix (one packet) • 12 slices Havarti Cheese Slices • 6 tablespoons mayonnaise

Recipe

  1. 1
    Preheat a large skillet over medium heat. Place hamburger bun halves, cut-sides down, in the hot skillet until lightly toasted, 2 to 3 minutes. Remove toasted buns to a plate.
  2. 2
    Preheat an outdoor grill for medium heat. Heat butter in a large saucepan over medium heat on the grill. Add mushrooms and onions; season with salt and black pepper and cook and stir until mushrooms are lightly browned, about 20 minutes.
  3. 3
    Meanwhile, mix ground beef and onion soup mix in a bowl using your hands. Form mixture into 6 hamburger patties.
  4. 4
    Lightly oil grill grates. Grill burgers for about 5 minutes, then flip and grill to your desired doneness. A meat thermometer inserted near the center of patties should read 180 degrees F (82 degrees C).
  5. 5
    Remove burgers from heat to rest for 5 minutes. Spread each bun with 1 tablespoon mayonnaise, and add burgers; divide mushrooms and onions between burgers to serve.