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Caramelized Onion Cheeseburgers

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Rate this recipe 4.5/5 (17 Votes)
Caramelized Onion Cheeseburgers 1 Picture

Ingredients

  • 2 Tbs. extra-virgin olive oil; more as needed
  • 1 large sweet onion, thinly sliced (about 2 cups)
  • Kosher salt and freshly ground black pepper
  • 1/3 cup mayonnaise
  • 1 Tbs. Dijon mustard
  • 1-1/2 tsp. fresh lemon juice
  • 1 tsp. finely chopped fresh rosemary
  • 1 small clove garlic, minced
  • 1-1/2 lb. 85%-lean ground beef
  • 4 slices Comté or Gruyère cheese
  • 4 good-quality hamburger buns or rolls, split
  • 12 fresh arugula leaves

Details

Servings 4
Adapted from finecooking.com

Preparation

Step 1

Burgers just got better with the addition of tender sweet onions, melted cheese, and tangy lemon-Dijon mayonnaise.



Prepare a medium-high gas or charcoal grill fire. Alternatively, position an oven rack 5 to 6 inches from the broiler and heat the broiler to high. Line the bottom of a broiler pan with foil and lightly oil the perforated part of the pan.

Meanwhile, heat the oil in a 10-inch skillet over medium-high heat. Add the onion, 1/4 tsp. salt, and 1/8 tsp. pepper; reduce the heat to medium low and cook, stirring occasionally, until deeply golden brown and tender, 15 to 18 minutes.

Combine the mayonnaise, Dijon, lemon juice, rosemary, and garlic in a small bowl. Season to taste with salt and pepper and set aside.

In a medium bowl, gently combine the beef with 1/4 tsp. salt and 1/8 tsp. pepper. Form the beef into 4 patties (3-1/2 inches in diameter) and make a deep depression in the center of each patty so the burgers keep their shape during cooking. Lightly sprinkle the patties with 3/4 tsp. salt and 1/2 tsp. pepper. Grill or broil them on the prepared pan for about 4 minutes per side for medium, or until desired doneness. Top each burger with 1 slice of the cheese and grill or broil until melted, 30 to 60 seconds.

Toast the buns on the grill or under the boiler until golden, 30 to 60 seconds. Serve the burgers on the toasted buns with the caramelized onions, mayonnaise, and anugula.

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