Choose the type of ham: fully cooked, partially cooked, or raw
Thaw the ham in the refrigerator if frozen
Preheat the oven to 325°F
Remove packaging and place the ham in a roasting pan
Score the surface of the ham in a diamond pattern if desired
Insert a meat thermometer into the thickest part without touching bone
Cover the ham loosely with foil
Bake until heated through or until the internal temperature reaches the proper level for the type of ham
Remove the foil during the last portion of baking if glazing
Brush on glaze if using
Continue baking until the glaze is set and caramelized
Let the ham rest for 10 to 15 minutes before slicing
Slice and serve