Irresistible French Onion Soup Burgers
These French Onion Soup Burgers merge the classic flavors of French onion soup with the satisfaction of a juicy burger. Topped with caramelized onions, melted Gruyère cheese, and served on a toasted bun, this dish will elevate your burger night to a gourmet experience.
Equipment
- 1 skillet
- 1 grill or grill pan
- 1 baking sheet
- 1 bowl for mixing
- 1 cutting board
Ingredients
- 1 lb ground beef (80/20 blend)
- 2 large onions, thinly sliced
- 2 tablespoons butter
- 1 tablespoon olive oil
- 1 tablespoon sugar
- 1 teaspoon salt
- 1 teaspoon black pepper
- 4 slices Gruyère cheese
- 4 burger buns
- ½ cup beef broth
- 1 tablespoon all-purpose flour
- to taste fresh thyme leaves, for garnish optional
Instructions
- In a skillet, heat the butter and olive oil over medium heat. Add the sliced onions, sugar, and salt. Cook for about 15 minutes until the onions are soft and caramelized, stirring occasionally.
- Once caramelized, sprinkle the flour over the onions and stir to combine. Slowly add the beef broth, stir well, and let simmer for about 5 minutes until slightly thickened. Remove from heat.
- While the onions cook, shape the ground beef into four patties and season with black pepper.
- Preheat your grill or grill pan over medium-high heat. Grill the patties for about 4-5 minutes per side for medium doneness.
- In the last minute of cooking, place a slice of Gruyère cheese on each patty and close the grill lid to melt the cheese.
- Toast the burger buns on the grill for about 1-2 minutes until golden.
- Assemble the burgers: place each patty on the bottom half of the bun, generously top with caramelized onions, and add the top half of the bun.
- Garnish with fresh thyme leaves if desired, and serve hot.
Notes
You can customize the burgers with additional toppings like sautéed mushrooms or a drizzle of balsamic glaze.
These burgers pair well with crispy fries or a light salad for a complete meal. Adjust the cooking time for the burgers based on your preferred level of doneness.