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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.
Directions. 1  Heat oven to 250 degrees F. Remove ham from package. 2  Place Spiral Sliced Ham face down in roasting pan. 3  Cover pan with aluminum foil; bake ham 1 hour and 15 minutes. 4  Meanwhile, prepare sugar rub. 5  Combine brown sugar with dry mustard, lime rind, ginger, allspice, cloves and finely chopped pecans in bowl. Cover pan with aluminum foil; bake ham 1 hour and 15 minutes. 2  Meanwhile, prepare sugar rub. 3  Combine brown sugar with dry mustard, lime rind, ginger, allspice, cloves and finely chopped pecans in bowl. 4  Mix thouroughly with fork. 5  Stir in lime juice to moisten sugar mixture evenly. 6  Set rub aside.