Your ham is already cooked so what you'll be doing prior to serving is re-heating (essentially). Personally, I wouldn't add water; I'd keep the heat rather low (no higher than 325 F) and re-heat it slowly. If you add water, you'll be steaming the ham rather than keeping the somewhat crispy outer coating. It can be done either way but I believe you'll have a superior result by heating without water. Do, however, keep the ham covered to retain all the flavors and avoid it becoming dry. That's really all you must do.
do not cook it is precooked. heat at 350 for 20 min/lb
A precooked ham is already cooked and needs only to be heated to a desired temperature, if it is wanted to serve it hot. As a precooked item, it can be sliced and served cold.
Then cook it.
though precooked, it is best when baked usually at 18 minutes per pound. it is safe to eat but would not taste as good.
You don't really "cook" it, as you're just heating it.You want an inside temp of about 145 degrees. In a 325 degree oven, it will take about 13 minutes per pound.
Usual you cook a ham 20 minutes per pound at 325
15 min per lb at 300 degrees
Since your ham is precooked, all you have to do is cover it with foil and warm it up at 325 degrees for about 60 to 90 minutes. If you want the outside browned, just take the foil off the last ten minutes and raise the heat to 350-375. It will not dry out because most hams are injected with lots of water at the packing plant. Now, if you want your ham to taste out-of-this-world delicious, here's how I did it when I was a professional cook. Mix together: the juice from 1-15oz can of pineapples, 1/4 cup brown sugar and 4 teaspoons ground cloves. Slather the mixture all over your ham and in between any slices you can get it in to. Cook the same as above. Save the juice for gravy or just spoon it on your ham and mashed potatoes. I guarantee you will love it.
You should cook a spiral sliced ham for 20 minutes per pound at 325 degrees F. A great recipe: Place ham in roasting pan. Cover with pineapple juice. Cover with tin foil and refrigerate overnight. To cook, pour off pineapple juice and mix in 1/2 cup honey and a few tablespoons of brown sugar. Mix well and pour over ham. Cover with tin foil and bake at 150 - 200 degrees F for 6 to 8 hours. Your ham will be tender, juicy and delicious.
60 minutes you bake ham 20 minutes per pound
How long do I cook a precooked ham? It is 15 lbs. A precooked ham does not have to be cooked, but will taste better if you heat it thoroughly to an internal temperature of 140°F (60°C) or so. Place the ham in a 325°F oven (163°C). It will take 12 to 15 minutes per pound for a whole or boneless ham and 18 to 20 minutes per pound for a half ham.
For a fully cooked boneless ham you go with 15 minutes for the pound (so 2 1/4 hours or 135 minutes) at 325 degrees