Here is an easy campfire potatoes recipe:
4 T Butter or margarine
10 oz Cheddar cheese,sharp
Salt & pepper to taste
Grease a large square of heavy foil. Arrange sliced potatoes on foil, sprinkle with salt and pepper and cover with sliced onions. Add chunks of butter or margarine. Wrap and seal foil. Cook over hot coals on a grill or within the coals of your fire, turning occasionally until done (30 or 40 minutes depending on fire). Open foil and add thin-sliced cheddar strips. Cover again and grill for a couple of minutes, until cheddar melts.