Place the ham, cut side down, in the bottom of an 8 quart oval slow cooker.
In a small bowl, whisk together the brown sugar, pineapple juice, mustard, cinnamon, cloves, allspice and nutmeg. (no salt and pepper needed because the ham is already salty on it's own.)
Pour the glaze over the ham and cover with the lid.
Cook the ham on high for 3-4 hours or low for 6-7 hours until an instant read thermometer reads 140 degrees F.
Transfer the ham to a platter and cover with foil. Rest for 15 minutes.
While the ham is resting, transfer the glaze from the slow cooker to a saucepan and bring to a boil over medium high heat. Cook the glaze for 10-15 minutes or until it has reduced by half and has thickened slightly.
Brush the glaze over the surface of the ham and serve immediately.
Video
Notes
Crockpot Ham can be made up to 1 day in advance, however, the beauty of the slow cooker is that you can easily make this earlier in the day and keep it warm.Leftovers last up to 4-5 days in the refrigerator tightly wrapped in plastic wrap or an airtight container.