Indulge in a mouthwatering fusion of flavors with French Onion Soup Burgers! This delectable recipe features juicy patties topped with sweet caramelized onions and gooey cheese, creating a hearty treat that's easy to make. Elevate your burger game and impress your family and friends with this satisfying meal.
1 lb ground beef or ground turkey
1 large onion, thinly sliced
2 tablespoons unsalted butter
1 tablespoon olive oil
1 teaspoon sugar
1 teaspoon fresh thyme, chopped (or ½ teaspoon dried thyme)
1 tablespoon Worcestershire sauce
Salt and pepper to taste
4 slices of Swiss cheese (or Gruyère)
4 burger buns (preferably toasted)
1 cup beef broth
Fresh parsley, chopped (for garnish)