Preheat oven to 325°℉; add water to Dutch oven; pat dry ham and place cut side down in Dutch oven; cover and bake 20-minutes per pound until ham reaches an internal temperature of 140°℉
½ cup water, 1, 5-7 pound pre-cooked ham
In a medium saucepan on medium heat, combine brown sugar, maple syrup, Dijon mustard, apple cider vinegar and liquid smoke; cook uncovered, stirring constantly until sugar is dissolved and the mixture is smooth; remove from heat
1 cup light brown sugar, ½ cup maple syrup, 2 tablespoons Dijon mustard, 3 tablespoons apple cider vinegar, 2 teaspoons liquid smoke (optional)
Remove ham from pan; separate spiral slices with a sharp knife; place ham back in the Dutch oven on it's side with the fat side down; drizzle a little of the glaze over the slices and return to the oven and bake uncovered 10-15 more minutes
Baste ham frequently while it's in the oven
Once the ham is nicely coated, remove it from the Dutch oven and plate on a cutting board; tent with foil and allow to rest for 5 minutes
Slice and plate; drizzle with more glaze if desired
Notes
If there's any glaze left in the Dutch oven, you can drizzle that over the ham after you've placed it on the cutting board or after you've plated the ham slices.