Prepare 1 small sheet of aluminium foil for each potato, large enough to wrap all the way around the potato. Place 1 potato on each sheet of foil, and drizzle on 1 teaspoon of oil and some salt. Rub the salt into the skin and wrap the potato tightly in foil. Repeat with the rest of the potatoes.

Place the potatoes in the insert of the crock pot. Cover with the lid, and set to LOW for 6 - 8 hours. When the potatoes are cooked, serve as desired.