Good Questions. Pin it. Q: I'm a surgical resident and I'm frequently on call at the hospital with little time to spare in between cases, so I rarely get to sit down to eat dinner (even a quick one!). The only fridge is nowhere near the ORs, plus there isn't usually time to run down and heat up food to eat.
2 1/2 hours. Here's how: Preheat the oven to 325, place the ham on a rack in a baking dish with a little water in the bottom. Wrap in foil, bake for about 2 hours, or until th â¦ e internal temperature is 135 - 140 degrees.5 minutes per pound at 350 degrees. So, for a 7 lb. ham you are looking at just over an hour. If you aren't sure, cut a small slit on the largest part of the ham and feel if it's warmed through. Bone-in hams cook faster.
Put the ham into the baking pan and then put the pan in the oven. Estimate the amount of time the ham will need to cook. A 12-pound ham will take about 18 to 20 minutes per pound to bake, or roughly three and one-half to four hours.At the lowest time estimate, begin checking the internal temperature.When it reaches 160 degrees F, the ham is done. 12-pound ham will take about 18 to 20 minutes per pound to bake, or roughly three and one-half to four hours.