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Typically this is about 18 minutes per pound but Iâll sometimes pull mine out about 20 minutes before that since it will stay warm in the tinfoil (and even room temperature ham is MUCH better than dry)! Most directions for cooking a spiral sliced ham tell you to reheat your ham at 275F and I agree with this method.
Preheat oven to 275Â°F. Remove all packaging materials and place ham face down directly into baking dish or roasting pan. (Place whole ham on its side.) Cover tightly with lid, foil or place in cooking bag and heat at 275Â°F for approximately 12-15 minutes per pound.piral Sliced Ham. To heat or glaze your Cook's Bone-In Spiral Sliced Ham prior to serving, we recommend the following instructions for best results. IMPORTANT: Don't overheat your ham (unless you prefer it as dry as the Sahara, of course).