Yes, you can prepare Kurobuta ham in an oven. Preheat your oven to 325°F, add some wood pellets for smoking, and roast the ham for 4 hours or until the meat reaches an internal temperature of 140°F. If you want to glaze the ham, remove it from the oven after 2 hours, brush it thoroughly and place it in the oven again. Repeat this process after every 30 minutes until the meat reaches the internal temperature of 140°F.