Brie & Caramelized Onion Stuffed Burgers

These keto-friendly burgers are filled with creamy Brie cheese and savory caramelized onions, creating a flavor-packed meal that's sure to satisfy. Perfect for a low-carb dinner any night of the week! Ingredients: 1 lb ground beef Salt and pepper to taste 6 slices of Brie cheese 1 large onion, thinly sliced 2 tbsp butter or olive oil 1 tsp balsamic vinegar Lettuce leaves for serving Instructions: Cut the ground beef into 12 equal pieces and shape them into thin patties Add salt and pepper to each patty On six of the patties, put a slice of Brie cheese Melt the butter or heat the olive oil in a pan over medium heat It will take about 15 to 20 minutes of cooking after adding the sliced onions until the onions turn caramelized Pour the balsamic vinegar over the onions that have been caramelized and mix them together Add some caramelized onions to the patties that ha...