You can make these potatoes in either a foil packet or a foil roasting pan.
Spray a foil roasting pan with cooking spray. Or lay out a piece of aluminum foil and spray it with cooking spray.
Slice the potatoes into thin slices and place in the foil roasting pan or on the foil. Slice them thin, about 1/8 of an inch is ideal.
Slice the onion and add on top of the potatoes.
Pour the barbecue sauce over top of the potatoes.
Sprinkle half of the cheese on top of the potatoes and put the other half aside for later.
Mix it all together and cover the pan with foil if using a roasting pan. If using a foil packet put another sheet of foil over the top and crimp the edges to seal the packet.
Put the potatoes on the grill on medium and let the cook. If using a foil roasting pan it will take about 45-60 minutes to cook. If using a foil packet it will take 15-20 minutes. Shake the pan occasionally or flip the foil packet halfway through.
The time to cook the potatoes will vary based on how hot your grill is and how thing you sliced the potatoes. The potatoes are done when a form goes into them easily.
Once the potatoes are cooked remove the potatoes from the grill and add the rest of the cheese.
Cover and let them rest for 5 more minutes to melt the cheese.
Add the bacon right before serving.
You can pre-cook or parboil the potatoes to make the cooking time shorter. This is especially useful if you are making a large pan of potatoes. To do this put the potatoes in a microwave and cook them for 4 minutes after washing them. The slice them and proceed as directed. This will cut the cooking time for a large pan of potatoes to about 30 minutes.Recipe from https://www.upstateramblings.com/