Preheat oven to 350 degrees.

Slice the ham and put it into a Dutch Oven.

To make the ham glaze, mix together brown sugar, ground mustard, orange juice and honey in a saucepan. Bring to a boil over medium heat, stirring often.

Pour the glaze over the ham. Put the cover on the Dutch oven and place it in the oven.

Bake at 350 degrees for one hour or until heated through, basting after 30 minutes.