With a sharp knife, score the ham diagonally left to right, then right to left, to create a diamond crisscross pattern.
Pour the wine or juice into a 6-quart or larger oval slow cooker. Add the ham. Cover and cook on low until the ham is heated completely through, 5 to 6 hours (it should reach 140 degrees F on an instant read thermometer).
Towards the end of the ham’s cooking time, prepare the Brown Sugar Glaze. Transfer the heated ham to a cutting board and brush super liberally with the glaze. Slice and enjoy! If desired, use the cooking juices in the slow cooker to make Ham Gravy.
Notes
*You can also make this recipe with boneless ham; note that it will heat through more quickly and is more prone to drying out.
TO STORE: Store leftover crockpot ham in an airtight storage container in the refrigerator for 3 to 5 days.
TO REHEAT: Reheat ham in the microwave, or place it in a baking dish with a few tablespoons of water, broth, or stock; cover and reheat in a 325 degree F oven until the ham reaches an internal temperature of 165 degrees F.
TO FREEZE: You can freeze leftovers in an airtight container or zip-top freezer bag. Thaw in the refrigerator, then reheat according to the instructions above.