To cook cooked ham in an oven, you'll need to reheat it properly to ensure it's heated through without drying it out. Here's a basic guideline to follow:
Preheat the oven: Set your oven to 325°F (163°C) to ensure gentle and even heating.
Prepare the ham: Place the cooked ham on a rack in a shallow roasting pan. If the ham is whole, score the surface in a diamond pattern, about 1/4 inch deep. This will help the glaze penetrate the meat.
Add flavor (optional): You can add a glaze or seasoning to enhance the flavor of the ham. Some popular options include brown sugar, honey, mustard, or a combination of these. Brush the glaze over the surface of the ham, making sure to cover it evenly.
Cover the ham (optional): If you're concerned about the ham drying out, you can loosely cover it with aluminum foil. This will help retain moisture while it reheats.
Reheat the ham: Place the ham in the preheated oven and cook it for about 10-15 minutes per pound. If you have a meat thermometer, insert it into the thickest part of the ham without touching the bone. The internal temperature should reach 140°F (60°C).
Baste and glaze (optional): If you've applied a glaze, you can baste the ham with the drippings every 15-20 minutes during cooking to add more flavor and moisture.
Let it rest: Once the ham reaches the desired temperature, remove it from the oven and let it rest for about 10-15 minutes. This allows the juices to redistribute within the meat.
Slice and serve: After resting, carve the ham into slices of your preferred thickness and serve while warm.
Remember to adjust the cooking time based on the size of your ham and your oven's performance. It's always a good idea to use a meat thermometer to ensure the internal temperature is safe for consumption.