French Onion Burgers

Ingredients

• hamburger buns (6 units)
• butter (0.25 cup)
• sliced mushrooms (8 ounces)
• onions (2 units)
• salt and freshly ground black pepper (0 )
• ground beef (2 pounds)
• dry onion soup mix (1 packet)
• havarti cheese (12 slices)
• mayonnaise (6 tablespoons)

Instructions

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. 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. Meanwhile, mix ground beef and onion soup mix in a bowl using your hands. Form mixture into 6 hamburger patties.
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. 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.

Nutrition

(*Nutrition data is approximate and may vary depending on the brand and type of ingredients used.)

• kcal: 961
• fat: 63 g
• sats: 27 g
• carbs: 35 g
• fibre: 3 g
• protein: 61 g
• salt: 1.108 g