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French Onion Soup Burgers

A delicious twist on a classic French onion soup, these burgers feature caramelized onions, melted cheese, and seasoned beef patties in a soft brioche bun.
Prep Time 30 minutes
Cook Time 25 minutes
Total Time 55 minutes
Course Dinner, Main Course
Cuisine American, French
Servings 4 servings
Calories 600 kcal

Ingredients
  

For the Caramelized Onions

  • 1 large large onion, thinly sliced
  • 2 tablespoons butter
  • 2 tablespoons olive oil
  • 1 teaspoon sugar to enhance caramelization

For the Patties

  • 1.5 lbs ground beef
  • 1 tablespoon Worcestershire sauce
  • 1 teaspoon garlic powder
  • to taste Salt and pepper
  • 4 slices Gruyère or Swiss cheese
  • 4 pieces brioche buns
  • Fresh thyme leaves for garnish optional

Instructions
 

Caramelizing the Onions

  • In a large skillet, heat the butter and olive oil over medium heat.
  • Add the thinly sliced onion and cook, stirring occasionally, until the onions are caramelized, about 20-25 minutes. Add sugar halfway through.

Making the Patties

  • In a large mixing bowl, combine the ground beef, Worcestershire sauce, garlic powder, salt, and pepper. Mix until just combined.
  • Divide and shape the mixture into 4 equal patties.

Cooking the Burgers

  • Preheat a grill or skillet over medium-high heat.
  • Cook the patties for 4-5 minutes on each side, or until they reach your desired level of doneness.
  • During the last minute of cooking, place a slice of Gruyère or Swiss cheese on each patty to melt.
  • Toast the brioche buns on the grill until lightly browned.

Assembling the Burgers

  • Assemble the burgers by placing each patty on the bottom half of a brioche bun and topping with a generous portion of caramelized onions.
  • Garnish with fresh thyme leaves if desired, and cover with the top half of the bun.

Serving

  • Serve immediately and enjoy the rich, savory flavors!

Notes

Be patient while caramelizing the onions for the best flavor. Don't overwork the beef when mixing. Consider making extra caramelized onions for other dishes. For a twist, try blue cheese instead.
Keyword Cheeseburgers, comfort food, French Onion Soup Burgers, Grilled Burgers, Savory Burgers