You can stuff the potatoes, wrap them in foil and return to the crockpot to keep warm until ready to eat. If you have room in your crockpot to place the potatoes in a single layer, you can also top the potatoes with the cheese and put them back in the crockpot to melt the cheese. Cooking time will depend on the shape of your potatoes and how big they are (e.g., long and skinny vs. short and round)