- 1. Preheat your oven to 350. Score the ham in a diamond pattern, about ¼ inch deep. Place the ham, cut side down in a roasting pan. Wrap the ham in a piece of parchment paper, then tightly wrap with aluminum foil. Bake for 45 minutes.
- 2. While the ham bakes, heat the remaining ingredients in a small saucepan over medium-low heat, whisking occasionally until the butter melts and the sugar is dissolved. Remove from the heat and set aside.
- 3. After 45 minutes, remove the ham from the oven and increase the temperature to 400. Remove the foil and parchment wrapping and brush the ham allover with about 1/3 of the honey-mustard glaze. Return the ham to the oven uncovered, and add additional glaze every 15 minutes until all the glaze has been used and the ham has a beautiful golden-brown crust, about 45 minutes more. Remove from the oven and let rest at least 20 minutes before slicing to serve.