Preheat oven to 275°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 275°F for approximately 12-15 minutes per pound.
People also ask, how long does it take to cook a 10 pound precooked ham?
Put the ham, flat-side down, on a rack in a roasting pan. Pour 1/4 inch water into the bottom of the pan. Transfer to the oven and roast until a thermometer inserted into the thickest part of the ham registers 130 degrees F, about 2 hours, 30 minutes (about 15 minutes per pound).
How long does it take to cook a ham in the oven?
If you're starting with a fully cooked city ham, bake it in a 350 degree F oven for about 10 minutes per pound. If your ham is only partially cooked, bake it for 20 minutes per pound. To help keep your ham moist and juicy, place the ham cut-side down in a baking pan and tent it with foil.