How do you warm an Appleton spiral cut ham?

To warm an Appleton spiral cut ham, preheat your oven to 325 degrees Fahrenheit. Take the ham out of the packaging, and place it cut-side down onto a baking sheet lined with parchment paper. Cover the ham with foil, and bake it in the preheated oven for 20 minutes per pound (plus an extra 10-15 minutes if it is frozen). Use an oven-safe meat thermometer inserted into the thickest part of the ham to check if it reaches the internal temperature of 140 degrees Fahrenheit.