Instructions:

Preheat oven to 350 degrees.

Remove ham from packaging, pat dry. 

With fat side up, score fat in a diamond pattern - inch to inch 1/2 in size (barely cut through surface). Pour orange juice over ham.

Spread mustard bbq sauce over all surfaces. Pat brown sugar on top of mustard bbq sauce. Place in roasting pan, cover.
Roast 2 hours or until meat thermometer reads 140 degrees.
Note: Use an oven-safe thermometer inserted into the center of the ham.