Place the ham cut side down in a roasting pan or a 9x13-inch baking dish.
In a small bowl, stir together 1/2 cup brown sugar, 2 tablespoons Dijon mustard, and 1/4 cup apple juice until just combined. Pour half of the glaze evenly over the ham. Cover the pan loosely with aluminum foil.
Cook the ham for about 10 minutes per pound, brushing the surface with the remaining glaze twice during the cooking process, with the last basting occuring 30 minutes before finishing.
After the final basting, remove the aluminum foil to allow the glaze to caramelize during the final 30 minutes of cooking.
When the ham reaches an internal temperature of 140°F (60°C), remove it from the oven and let it rest for 10–15 minutes. This allows the juices to redistribute, ensuring a moist and flavorful slice.
After resting, transfer to a serving platter and serve warm.
Notes
Ham Size: Aim for 3/4 to 1 pound per person for bone-in hams and 1/2 pound per person for boneless. The bone accounts for about 15-20% of the overall weight.
Basting Schedule: Baste approximately every 30 minutes. For a 7 pound ham, you may want to baste at the 20 and 40-minute mark. For a 9 pound ham, you would baste at the 30 and 60-minute mark.
Glazing Tips: Use a silicone or pastry brush for best results. If you don’t have one, use a spoon to drizzle and spread the glaze, though it may be trickier. Be generous with the glaze to ensure it seeps into the spiral layers for maximum flavor.