Preheat your oven to 325 degrees F. Line a deep baking dish with heavy-duty foil.
Remove ham from packaging. (Discard glaze packet if your ham comes with one.) Place ham flat side down in the pan. Cook for 1 hour.
Carefully remove ham from the oven. Using a spoon, drizzle half the glaze all over the surface of the ham. Use the back of the spoon to help smoosh some of the glaze between the layers. Bake for 30 minutes.
Remove ham from the oven. Drizzle the remaining glaze over the ham. Bake for another 30 minutes until heated through.
Remove from the oven. If you're making ham gravy, reserve the juices in the pan (there will be a good amount of liquid), otherwise discard the juices.
Transfer the ham to a rimmed serving platter placing the flat side out so you can take slices of ham. I like to add some kale leaves around the edge of the dish for presentation points. Serve warm or at room temperature.