Description
These French Onion Soup Burgers combine the rich, savory depth of classic French Onion Soup with a juicy beef patty. Topped with sweet caramelized onions and gooey Gruyère, they promise an unforgettable flavor experience.
Ingredients
- 3–4 large yellow onions, thinly sliced
- 2 tbsp unsalted butter
- 1 tbsp olive oil
- 1/2 cup beef broth (low-sodium recommended)
- 1/4 cup dry white wine (optional)
- 2 sprigs fresh thyme
- 1.5 lbs ground beef (80/20 chuck)
- 1 tbsp Worcestershire sauce
- Salt and freshly ground black pepper, to taste
- 4 brioche buns
- 1 cup grated Gruyère cheese
- 2 tbsp extra beef broth, for brushing buns
Instructions
- 1. Caramelize Onions: In a large, heavy-bottomed pot, melt butter and olive oil over medium-low heat. Add sliced onions and thyme. Cook, stirring occasionally, for 45-60 minutes until deeply golden brown and tender. Deglaze with wine (if using), then add 1/2 cup beef broth. Simmer until liquid is absorbed. Remove thyme and set aside.
- 2. Prepare Patties: Gently combine ground beef, Worcestershire sauce, salt, and pepper. Form into four 3/4-inch thick patties, making a thumbprint in the center of each.
- 3. Cook Burgers: Heat a skillet over medium-high. Cook patties 4-5 minutes per side for medium-rare, or to desired doneness. During the last minute, top each patty with a generous spoon of caramelized onions.
- 4. Assemble & Broil: Preheat broiler. Lightly brush cut sides of brioche buns with extra beef broth. Toast buns, cut-side up, on a baking sheet for 1-2 minutes until golden. Place onion-topped patties on bottom buns. Sprinkle grated Gruyère over burgers. Broil for 1-3 minutes until cheese is bubbly and melted. Add top bun and serve immediately.
- Prep Time: 20 mins
- Cook Time: 1 hour 15 mins