Preheat oven to 350 degrees. Make 2-4 patties from hamburger, slice potatoes and onions very thin. Dice up green pepper. Take a sheet of Good aluminum foil and place hamburger on bottom. On top of that place potatoes, top that with sliced onion and finish with green pepper. Wrap the foil up tightly and put on cookie sheet. Do this with each pattie(same way as before) You can use as much or as little potatoe, onion, and pepper as desired. Bake about 45 min depending on thickness of hamburger pattie. When done transfer to plate. Note: You can also do this on a grill( same cooking time)