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French Onion Burger

6

  • Prep Time10 mins
  • Total Time50 mins
  • Makes4 servings
French Onion Burger

This decadent, incredibly juicy burger recipe can be easily whipped up on a weeknight, but is impressive enough for company.

Ingredients

  • 3 tbsp unsalted butter, divided

  • 1 Spanish onion, sliced into rounds

  • 1 cup beef broth

  • 500 g lean ground beef

  • 1 tbsp finely chopped thyme

  • 2 tsp Dijon mustard

  • 4 slices Gruyère cheese

  • 4 brioche burger buns, split

  • 1/2 cup mayonnaise

  • 1 tbsp chopped parlsey

  • 1 cup arugula, (optional)

Instructions

  • Melt butter in a large frying pan over medium. Reserve 1 tbsp in a small bowl. Add onion to pan and cook, stirring often, until softened, about 8 min. Pour in broth and continue cooking, stirring occasionally, until onion is very soft, about 15 min.

  • Meanwhile, combine beef with thyme and Dijon in a large bowl. Divide into 4 portions, then form into four 4-in. patties. Sprinkle both sides with salt and ¼ tsp pepper.

  • Preheat barbecue or grill pan on medium. Oil grill. Cook patties, lid closed, until cooked through, 5 to 6 min per side. Melt a slice of cheese on each patty, lid closed, 2 min.

  • Brush reserved 1 tbsp butter on insides of brioche buns, then place on grill to toast, about 2 min.

  • Meanwhile, stir mayo with parsley and remaining 3/4 tsp pepper in a small bowl.

  • Spread bottom buns with pepper mayo. Layer with patties, sautéed onions and arugula. Sandwich with top bun.

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