Whoever thought of doing sweet potatoes in a crockpot was a genius! But, since I have no claim to fame, all I can tell you is that I tried it because my mom emailed me a recipe for it from somewhere, and it worked! The recipe said to do them whole and cook them all day, (perfect if you are going to be gone to work all day and need supper ready when you get home). However, I did them for a cooking class, and couldn't put them in the crockpot until 1pm and needed them done by 6pm! So I did them for two hours on high and then turned them to low and actually had to turn them off by 5pm, because they were well done! So you can adjust the temp for as long or as short as you need. Then when they were finished, I had each person sprinkle some toasted walnuts and a drizzle of pure maple syrup on their sweet potato after I served it on their plate. I have to say, those were the best tasting sweet potatoes I've had in a long time! Didn't even have to peel them! So I dare you to try them, too...