The duration required for heating a pre-cooked, spiral-sliced ham within a slow cooker is dependent on the ham’s weight and the cooker’s heat setting. Typically, a spiral ham requires approximately 2.5 to 3 hours on low or 1.5 to 2 hours on high. Insert a meat thermometer into the thickest part of the ham, avoiding the bone, to ensure it reaches an internal temperature of 140F (60C) for safe consumption.
Utilizing a slow cooker for heating a spiral ham offers advantages such as consistent, even heating, preventing the ham from drying out, and freeing up oven space for other dishes, especially during holiday gatherings. The slow cooking process also allows for the infusion of flavors from added ingredients, like glazes or broths, throughout the ham.