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Caramelized Onion Burger Recipe

American · Main course · 55 min total

A juicy beef burger topped with sweet, slow-cooked caramelized onions and melted cheese, perfect for a satisfying homemade meal.

Ingredients

• 2 large yellow onions, thinly sliced
• 2 tablespoons unsalted butter
• 1 tablespoon olive oil
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper
• 1 teaspoon brown sugar
• 1 tablespoon balsamic vinegar
• 1 1/2 pounds ground beef (80/20)
• 4 slices cheddar cheese
• 4 hamburger buns, split and toasted
• Lettuce, tomato, pickles, ketchup, mustard (optional, for serving)

Instructions

1. In a large skillet over medium heat, melt butter with olive oil. Add onions, salt, and pepper. Cook, stirring occasionally, for 25-30 minutes until deeply golden and soft.
2. Stir in brown sugar and balsamic vinegar; cook for 2 more minutes. Remove onions from skillet and set aside.
3. Divide ground beef into 4 equal portions and shape into patties slightly larger than the buns. Season with salt and pepper.
4. Heat the same skillet over medium-high heat. Cook patties for 4-5 minutes per side for medium, or to desired doneness. During the last minute, top each patty with a slice of cheese and cover to melt.
5. Place patties on bun bottoms. Top with caramelized onions and any desired toppings. Close with bun tops and serve immediately.

Tips

• For extra flavor, add a splash of Worcestershire sauce to the ground beef before shaping patties.
• Caramelized onions can be made ahead and refrigerated for up to 5 days; reheat before using.
• Serve with sweet potato fries or a side salad.

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