Cheesy Potatoes In Foil

4 large baking potatoes, unpeeled and sliced 1/4" thin slices

1 med onion, minced (not dried-fresh only!)

4 Tbsp butter cut into small pieces

1 tsp salt

1/4 tsp pepper

1/4 tsp caraway seed (have done it without and it tastes just as good)

4 oz shredded cheddar cheese

Wrap all ingredients EXCEPT CHEESE in double thickness of heavy foil. Cook about 35 minutes on the grill, turning often. Remove from heat and sprinkle with cheese.