PLACE ham in shallow pan. Score ham; cover with foil. Bake 1-1/2 hours. Meanwhile, microwave remaining ingredients in microwaveable bowl on HIGH 30 to 45 sec. or until cranberry sauce is melted. Reserve 1-3/4 cups cranberry mixture.
REMOVE foil from ham. Bake, uncovered, 1 hour or until ham is heated through (140°F), brushing with remaining cranberry mixture every 20 min.
TRANSFER ham to cutting board; cover loosely with foil. Let stand 15 min. Slice ham; serve with reserved cranberry mixture.