Bacon Ranch Foil Potatoes

Spray 3 sheets of foil with cooking spray. Top each piece with equal portions of potatoes, bacon, and ranch dressing mix. Add salt and pepper to taste. Add 1 tablespoon of butter to each serving. Wrap securely. Grill for 20 to 30 minutes. Let stand 10 minutes before serving. Serve in foil, topped with sour cream if desired. NOTES: You could also add whatever shredded cheese blend you like. When I've added this, I added cheese after initial grilling time, resealed and let sit on indirect heat for another 5 - 10 minutes. This way potatoes cook but cheese doesn't burn.