Wash and scrub the potatoes thoroughly under running water to remove any dirt.
Pat the potatoes completely dry with a clean kitchen towel or paper towels.
Once dry, prick each potato a few times with a fork. This allows steam to escape during cooking. Wrap each potato tightly in aluminum foil.
Place the foil-wrapped potatoes in your slow cooker. Cook on the LOW setting for 8 hours or on the HIGH setting for 4 hours, or until tender when pierced with a fork.
Carefully remove the potatoes from the slow cooker. Unwrap and serve hot with your favorite toppings.
Notes
This slow cooker method is perfect for hot summer days when you don't want to heat up your oven. Adjust cooking time based on your slow cooker and potato size. For best results, use medium to large Russet potatoes.