Baked Potatoes in a crockpot (great for summer and saves a little money instead of stove) Scrub and pat dry your potatoes Poke a few holes in them with a fork. Rub in oil (I used olive oil) and salt. Wrap in aluminium foil and put in your crock pot. I cooked 6 potatoes on low for 7 hours, but you may need to vary the cooking time, based on the size and number of potatoes and your crock pot. Enjoy with your favorite toppings!