If I am heating a fully cooked ham that directs me to cook at 325 degrees F for 20 minutes per pound (ham is 3.38#) and I want to heat it through at a 200 degree F temp. How long should I put the ham in the oven for?
Not knowing what kind of oven you have or what cut the ham is, bone in or bone out etc., I would recommend that you simply buy an inexpensive meat thermometer (less than $10 in most places) and check the ham's internal temperature every two hours or so.
Glaze the Ham. Put in oven at 170f at 9pm. Turn heat up to 350f at 5 am. Let brown. Remove & have some for breakfast. At 6am nice & hot.
Place ham on a rack in a shallow uncovered pan with the fat side (skin side) up so the ham will baste itself. 6) Roasting time is 30 minutes per pound of ham at 200 Degrees F. However it is recommended to use a meat thermometer and cook until the internal temperature reaches 155 Degrees.