01 -
Preheat oven to 325°F. Unwrap the spiral ham and place it in a large roasting pan or baking dish.
02 -
In a saucepan over medium heat, combine dark brown sugar, honey, Dijon mustard, apple cider vinegar, cinnamon, cloves (if using), garlic powder, onion powder, unsalted butter, and orange juice (if needed). Stir frequently until the mixture is smooth, slightly thickened, and well blended, about 5 minutes.
03 -
Cover the ham loosely with aluminum foil and bake in the preheated oven for approximately 1 hour, or until warmed through, estimating 10 to 12 minutes per pound.
04 -
Remove the ham from the oven, discard the foil, and generously spoon the glaze over the entire ham, focusing on the spiral cuts. Return the ham to the oven uncovered. Baste every 15 minutes with additional glaze, continuing to bake until the glaze is caramelized and richly colored, about 30 to 45 minutes.
05 -
Remove the ham from the oven and allow it to rest for 10 to 15 minutes to redistribute juices. Garnish with fresh parsley if desired and serve warm.