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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.
Place the ham in the pan, flat side down-loosely cover with foil and bake 10 min for each pound of ham. When it has 20 min to go pull it from the oven, remove the foil. In a sm bowl mix the glaze packet with 1/2 cp pineapple juice (or 1/2 cp pan drippings).eport Abuse. A spiral ham is already cooked, so you would just need to heat it and apply the glaze. Read the instructions on the ham packaging. A rule of thumb is about 10-15 minutes per pound.