Place the ham cut side down in a roasting pan. Place in a baking bag or tightly wrap in foil.
Bake the ham at 275° for 12-15 minutes per pound, depending on the size of the ham. (It takes about 2 hours)
Brown sugar, honey, orange juice, pineapple juice, and Dijon mustard should all be combined in a small saucepan. Whisk well and cook on low for 8-10 minutes, stirring frequently, until it reduces and thickens into a glaze.
Remove the ham from the oven 15 minutes before it is done and brush it with the glaze.