A spiral-sliced ham is perfect for any occasion. It is quickest of all of the hams to serve because of the way it is already cut--one continuous cut around the entire ham. Each ham slice has the same thickness and it makes a beautiful presentation on any holiday or special occasion table. The cooking time for a spiral sliced ham depends on how much it weighs.
Preheat your oven to 325 degrees. While the oven is heating, remove the ham's packaging ham and look for a glaze packet. Most spiral sliced hams will come with a glazing packet included. Mix the glaze in a small pot with 2 tbsps. of warm water and set to the side. Place ham in a roasting pan or similar pan and cover tightly with aluminum foil. Do not overheat the oven—keep it exactly 325 F. Note: your spiral sliced ham should already be thawed and ready for cooking. Read the ham's packaging for tips on thawing the ham.
The cooking time for a spiral sliced ham is 12 minutes per pound. So, a 5-pound ham would cook for about 60 minutes. A 7-pound spiral sliced ham would cook for about an hour and a half. Approximately 30 minutes before the end of ham's cooking time, remove ham from oven and let stand for two to three minutes. Heat the glaze for about four minutes then apply to the ham using a brush. The glaze will be somewhat thick. For a thinner glaze, apply immediately after removing ham from oven. Return the spiral sliced ham to the oven and bake uncovered at 325 degrees for 25 to 30 minutes. The glaze should be golden brown and crunchy.
After the spiral sliced ham is done, remove from oven and let stand a few minutes before serving. To reheat the ham later, place in a preheated 300- to 325-degree oven until warm. If reheating in a microwave, heat on medium to prevent the glaze from burning.