How to make the best and easiest slow cooker baked sweet potatoes - no oven or clean up required! My favorite way to cook sweet potatoes! What makes these slow cooker sweet potatoes delicious and healthy sweet potatoesaluminum foilolive oil How to make these slow cooker baked sweet potatoes Start by washing sweet potatoes and drying completely. (I usually cook about 4 at a time, but you can do up to 6 if you have a large slow cooker) Prick each potato with a fork a few times, and place each on an individual sheet of aluminum foil. Drizzle each potato with about 1/2 teaspoon of olive oil, and rub over sweet potato completely. Wrap each potato with the aluminum foil, and place in your slow cooker. Cook potatoes on high for 4-5 hours, or on low for 8-10 hours, ...