Pre-Cooked Ham Instructions If you have a fully cooked ham, all you need to do is heat it to serving temperature (145°F). If you want, you can add a glaze or other embellishments.

Cooking ham in a convection oven usually takes about 25 percent less time than a conventional oven. You can also set the convection temperature a little lower.

If you secure a spiral ham, be it for a special occasion or just what you've been craving, make sure you cook it just right ...

How long should I cook it? Ham labeled fully cooked needs a gentle rewarming in the oven. Most package directions recommend heating ham in a 325-degree oven.

Cooking and resting time can differ significantly between varieties, total weight, and portion, so for the perfectly cooked ham, check the USDA guidelines.

Most hams sold at grocery stores are fully cooked and should say so on the label. Technically what you are doing is reheating the ham and not cooking it further.

Most people love ham, and it’s hard to mess up. Since most hams are pre-cooked, you don’t have to worry about precise cooking times or dried-out meat.