Line a 9x13 baking pan with heavy-duty aluminum foil.

Place ham in the lined pan.

Brush 1/4 cup of honey mustard over the top of the ham.

Put ham, uncovered, in oven, and bake at 350 degrees for one hour.

Remove ham from oven, brush with another 1/4 cup of honey mustard, and insert meat thermometer into center of ham.

Cover ham loosely with aluminum foil.

Return ham to oven, and bake at 350 degrees F until the internal temperature of the ham reaches 140-160 degrees F. (Approximately 3 to 3-1/2 hours total cooking time.)

Remove ham from oven. Let rest under aluminum foil for 5-10 minutes before carving.

If desired, brush ham with additional honey mustard before, during, or after carving.