Question: how to heat up a fully cooked ham in crockpot?
Answer: Cover slow cooker with lid and set to low. Cook ham for 4 to 6 hours or until the meat is tender and the internal temperature reaches 140°F. If desired, flip and baste the ham halfway through cooking time and again about an hour before ham is done. Once ham is done, remove to a platter and tent with foil to keep warm.