Wash and slice the vegetables, cook

Add ground beef, salt, pepper, cubes, in a large bowl and combine until meat is evenly season, roll in to a meat ball and set aside

Cut each cheese into meatball and wrap the meat around it, fry or grill gently on the first side over a low heat Until the bottom is brown and well cooked

Cook burger for about 2min,sautee onions, sliced, cut bun into two, apply mayonnaise, on the lower bun, add, ketchup, masterd on upper top, make sure to sandwich meat, starting with lettuce, tomatoes, the cheese, and serve while hot