If the slow cooker is set on low it does not finish cooking a recipe in the given time frame.  If recipe call for a high heat start & then switches to low it is not automatic.  You have to manually make the adjustment. The keep warm feature is almost useless because it's "warm" temperature is just barely warm. Barely warm food on your plate is not very tasty.  Will keep because I am retired & at home to oversee the cooking process.  But would not recommend to others.