Fast and Easy Grilled Potatoes and Onions

5-6 unpeeled red potatoes sliced thin
1-2 Vidalia onions sliced thin
1 tablespoon butter per packet
salt and pepper to taste

Place potatoes and onions on heavy-duty aluminum foil. Divide into several individual packets and add 1 tablespoon butter per packet, salt and pepper. Seal packets tightly and place on fire for 15 minutes or until tender. If placing on grill, allow 25 -30 minutes.