Scrub and rinse potatoes then dry. Place each potato on a piece of aluminum foil (large enough to cover entire potato & then some). Drizzle 1 tsp olive oil on each potato to evenly coat. Sprinkle with sea salt and pepper (if you’d like). Wrap with foil.
Pour 1/2 cup water into a 6 or 7 quart slow cooker and place potatoes in slow cooker. Cover and cook on high heat 4 - 5 hours or low heat 7 - 9 hours, until potatoes are tender (smaller potatoes will cook faster than the larger). Serve warm with desired toppings.
We've done many baked potato bars in the office. Then everyone pitches in with the toppings which vary from bbq,chili, various cheeses, chives, black olives, sour cream ----go crazy!