Step 1 Prep Ham – Let ham sit covered at room temperature for 2 hours (or 1 hr for a 6-7 lb ham) before roasting, then remove packaging and pre-heat oven to 325˚F with the oven rack in the lower third of the oven.
Step 2 Make Glaze – While the ham is coming to room temperature, make the sauce. In a small saucepan over medium heat, combine apricot preserves, honey, brown sugar, dijon, and butter. Bring to a simmer and cook 1 minute, whisking constantly then remove from heat. The sauce should be the consistency of loose honey.
Step 3 First Glaze – Line your roasting pan with foil for easier cleanup. Place ham in a roasting pan cut-side down. Brush on 1/3 of the glaze and cover tightly with foil. Bake at 325 for 10-11 minutes per pound (about 2 hours for an 11.5 lb ham). Keep in mind ham is already cooked, and you just want to heat it up to about 110˚F. Use an oven-safe, internal temperature probe to test for doneness.
Step 4 Second Glaze – Increase oven to 425˚F. Remove ham from the oven and brush with 1/3 of glaze. Return to oven and bake uncovered 10 minutes.
Step 5 Third Glaze – Remove from oven and brush with remaining 1/3 glaze and roast uncovered another 10 minutes until a brown crust has formed and the internal temperature reaches 130-135˚F. Keep in mind once the ham is removed from the oven, the temperature will rise another 5-10 degrees to bring it to the recommended 140˚F.
Step 6 Rest Ham and Serve – Transfer ham to a serving dish and rest ham 15-20 minutes before serving. Strain pan juices through a sieve, skim off the fat that floats to the top. Spoon pan juices over ham slices when serving.
