Things You'll Need
Heavy-duty aluminum foil
Spiral-cut hams are a popular choice for holiday gatherings or Sunday dinner. Spiral ham is precooked so it can be eaten straight out of the package. A special saw makes the spiral cut, first used in 1957. It eliminates the need to carve the ham with a knife. Serving spiral-cut hams hot is not recommended because reheating can dry out a ham that is already sliced.
Preheat the oven to 325 degrees F.
Wrap the ham with heavy-duty aluminum foil.
Heat for 10 minutes per pound.
Insert a dial instant-read meat thermometer 2 to 2-1/2 inches into the thickest part of the ham. If it is leftover ham, the internal temperature of the ham should be 165 degrees. If the ham is straight from the package, it should be heated to 140 degrees.
Heat individual slices in a microwave.
Do not heat too long because the ham can dry out and the glaze can melt off.