Ingredients

• 1 large white onion
• 0.75 pounds ground beef round
• 1 teaspoon kosher salt
• 0.5 teaspoons ground black pepper
• 4 slices merican cheese , cut into thirds
• 0.25 cups mayonnaise
• 1 tablespoon ketchup
• 1 teaspoon mustard
• 1 tablespoon pickle relish

Instructions

1. 1 Cut 4 1/2 -inch thick slices from the center portion of the onion and discard the smaller ends for another use. Divide beef into 4 portions and form each portion into a very thin patty. Season patties with salt and pepper.
2. 2 Heat a large skillet over medium-high heat. Working in batches, add 2 onion slices to the pan and cook, undisturbed, about 2 minutes. Add 2 patties and continue to cook until golden brown, 2 to 3 minutes. Flip onion and burger patties and continue to cook until golden brown pressing the burger as it cooks.
3. 3 Add 2 cheese slices to the top of one onion slice and both burger patties. Place one burger on the cheese-topped onion slice and top with the second burger patty. Place remaining onion slice over burger and press down. Flip burger and cook 1 to 2 more minutes. Remove frompan and set aside. Repeat with remaining onions, burger patties andcheese.
4. 4 Combine mayo, ketchup, mustard, and pickle relish in a small bowl and stir well. Serve with burgers.

Nutrition per serving