Preheat the oven to 325°F
Remove the ham from packaging
Place the ham cut-side down in a roasting pan
Score the surface of the ham if desired
Cover the ham tightly with foil
Bake for 10 to 15 minutes per pound, or until heated through
Remove the foil during the last 20 to 30 minutes if glazing
Brush on glaze if using
Return to the oven until the glaze is set
Check that the internal temperature reaches 140°F for a fully cooked ham
Remove from the oven
Let the ham rest for 10 to 15 minutes before slicing