Marmalade-Glazed Ham

Preheat the oven to 350 degrees F (175 degrees C).

Place ham, cut-side down, in a large baking dish. Smear 3/4 of the marmalade all over the ham. Cover with aluminum foil.

Bake in the preheated oven until an instant-read thermometer inserted into the center reads 140 degrees F (60 degrees C), about 1 to 1 1/2 hours. Remove from the oven and let rest for 5 minutes.

While the ham is resting, mix remaining marmalade with horseradish mustard in a small bowl. Serve alongside ham.