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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.
If the ham came with extra glaze, follow the package directions for adding it and cooking the glaze. To glaze this type of ham, turn the oven to 400 degrees F, brush the ham with the glaze, and bake for 10-15 minutes until the glaze is browned and bubbling.Let stand for 10 minutes before slicing to serve.Source(s):est Answer: Spiral sliced are typically cooked so can be served cold but if you want to heat it up, place the ham, cut-side-down, on heavy-duty aluminum foil and wrap the ham thoroughly. Or use an oven roasting bag; follow instructions on the bag for preparation.