Hobo Stew

4 potatoes, scrubbed and sliced
4 carrots, scrubbed and sliced
1 medium onion, chopped
1 lb ground beef
1 tbls margarine

For each serving, cut 2 large sheets of foil (about 17" long)
Lay one sheet on top of the other and spread a little margarine over the top sheet of foil
Divide ground beef into 4 servings
Flatten beef to 1/2" thick on buttered side of foil
Put 1 sliced potato, some chopped onion and a sliced carrot on top of each portion of meat
Put a small amount of margarine and a sprinkle of salt and pepper on each serving
Wrap each food bundle in double foil by bringing the 2 opposite ends up and folding over several times
Fold the open ends over several times to keep juices from leaking out
Put the bundles, folded side up on the coals, or on a grill
Cook for 1 hour