Juicy Double Cheeseburgers with Caramelized Onions

Juicy Double Cheeseburgers with Caramelized Onions 🍔🧅These juicy, cheesy burgers are loaded with perfectly caramelized onions, melted cheddar cheese, and tender beef patties. The ultimate homemade comfort food!35 minutesIngredientsFor the Burgers:1½ lbs ground beef (80/20 blend)8 slices cheddar cheese4 brioche burger buns1 teaspoon salt½ teaspoon black pepper1 tablespoon butterFor the Caramelized Onions:3 large yellow onions, thinly sliced2 tablespoons butter1 tablespoon olive oil½ teaspoon salt1 teaspoon brown sugar (optional)For the Burger Sauce:¼ cup mayonnaise2 tablespoons ketchup1 teaspoon mustard1 teaspoon pickle juice½ teaspoon garlic powderInstructions1. Caramelize the onions: Heat butter and olive oil in a skillet over medium-low heat. Add sliced onions and salt. Cook for 20–30 minutes, stirring occasionally, until golden brown and sweet. Add brown sugar if desired.2. Prepare the sauce: Mix mayonnaise, ketchup, mustard, pickle juice, and garlic powder in a small bowl. Refrigerate until ready to use.3. Shape the patties: Divide ground beef into 8 equal portions and gently shape into thin patties.4. Cook the burgers: Heat a cast-iron skillet over medium-high heat. Season patties with salt and pepper. Cook for 2–3 minutes per side, depending on thickness, until the centers reach 160°F (71°C).5. Melt the cheese: Place one slice of cheddar on each patty during the final minute of cooking. Let it melt.6. Toast the buns: Spread butter on the cut sides of the brioche buns and toast until golden brown.7. Assemble: Spread burger sauce on the bottom buns. Stack two cheesy beef patties on each bun, add a generous portion of caramelized onions, and finish with the top buns.8. Serve: Enjoy immediately with crispy fries or your favorite side dish!Tips for the Best BurgersUse 80/20 ground beef for juicy, flavorful patties.Cook onions slowly to bring out their natural sweetness.Avoid pressing down on the burgers while cooking.Toast the buns to prevent them from becoming soggy.