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French Onion Soup Burgers

French Onion Soup Burgers

French Onion Soup Burgers combine the rich, sweet caramelized onions and melted Swiss cheese of classic French onion soup with juicy, flavorful beef patties. This recipe delivers a bold fusion of savory flavors and perfectly balanced textures in a simple yet impressive burger that’s perfect for weeknight dinners, casual gatherings, or game day celebrations. It is easily customizable for different dietary preferences, making it a versatile and irresistible meal option.

Ingredients

Scale

Main Ingredients

  • 1 lb ground beef (80/20 lean-to-fat ratio)
  • 2 large yellow onions, thinly sliced
  • 4 slices Swiss cheese
  • 1/2 cup beef broth
  • 2 tbsp butter
  • 4 burger buns, lightly toasted
  • 1 tsp fresh thyme leaves
  • 1/2 tsp garlic powder
  • 1 tbsp Worcestershire sauce
  • Salt and pepper, to taste

Instructions

  1. Caramelize The Onions: Slowly cook thinly sliced yellow onions in butter over low heat, stirring frequently to prevent burning. Continue cooking for 30 to 40 minutes until the onions are deeply caramelized and sweet.
  2. Prepare The Patties: In a bowl, combine the ground beef with garlic powder, Worcestershire sauce, salt, and pepper. Gently mix and shape the beef into 4 patties, making a small indentation in the center of each to ensure even cooking.
  3. Cook The Patties: Grill or pan-sear the patties over medium-high heat for about 4 minutes per side, or until your preferred doneness. During the last minute, top each patty with a slice of Swiss cheese to allow it to melt thoroughly.
  4. Assemble The Burger: Lightly toast the burger buns. Place the cheesy patties on the buns, generously pile on the caramelized onions, sprinkle fresh thyme leaves over the top, and finish with the toasted bun tops.
  5. Final Touches: Optionally, drizzle a little beef broth into the assembled burgers or brush the buns lightly with broth for added moisture and a “soup-like” effect reminiscent of traditional French onion soup.

Notes

  • Caramelize onions on low heat to avoid burning and develop natural sweetness.
  • Use freshly ground beef for optimal texture and flavor.
  • Handle the meat gently to keep patties tender and juicy; avoid overmixing.
  • Add cheese during the last minute of cooking for perfect meltiness.
  • Toast the buns to prevent sogginess and add pleasant texture.

Nutrition

Keywords: French onion soup burger, caramelized onion burger, Swiss cheese burger, gourmet burgers, comfort food, fusion recipe