Preheat oven to 275 degrees.
Begin by slicing your petite ham if you didn't purchase a spiral sliced ham. Set aside shingled in a baking dish with a lip.
Add spiral ham or sliced ham that you've shingled to baking dish. Cover with foil and bake to warm through, while making the glaze. You'll want to bake about your ham about 10 minutes per pound.
Meanwhile, make the Orange Marmalade Glaze. Add all ingredients to a small saucepan over low heat and whisk until bubbling and thickened by 1/3, about 10-15 minutes. Set aside.
After ham has warmed through, remove from oven and turn heat up to a low broil. remove foil and brush the glaze all atop the ham and in between the slices and crevices.
Low broil on the top rack, (watching closely), until glaze begins to caramelize, about 7-10 minutes.
Serve warm with side dishes and rolls. Enjoy!