Slice the onion into half rings and mince the garlic

To a pan with butter add the onions and garlic, let caramelize

Make the sauce by combining the mayo, ketchup, mustard, pickles, salt and pepper

Form 8 balls from the beef

To a hot skillet with butter add the meatballs and press flat with a spatula and some baking paper. Season the patties with salt and pepper, grill until crispy on the outside. When flipped, add your cheese of choice and cover the pan with a lit.

Assemble the buns by adding sauce to both buns, add sliced tomato on the bottom bun, followed by lettuce and 2 burger patties with cheese, top off with the caramelized onions.