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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.
A precooked ham does not have to be cooked, but will taste better if you heat it thoroughly to an internal temperature of 140Â°F (60Â°C) or so. Place the ham in a 325Â°F oven (163Â°C). It will take 12 to 15 minutes per pound for a whole or boneless ham and 18 to 20 minutes per pound for a half ham. You should also let it rest for 20 minutes or so out of the oven before you serve it. Submit your question.