Pat out 1 hamburger (thick), place on aluminum foil.
One slice of onion, place on top of hamburger.
One potato, place on top of onion.
Carrot, place sliced carrot on top of potato.
Wrap in aluminum foil. Two sheets may be needed. Bake in oven at 350 degrees for 1 hour or may also be cooked on barbecue pit or campfire by placing on coals.