(Approximate cooking time: 30-45 minutes)
Wash and dry apple. Using a paring knife, core apple, creating a two inch diameter bowl in apple. Pierce apple flesh with a fork (this allows for the flavors to permeate deeper into the apple). In a bowl, combine sugar, cinnamon, nuts, currants, divide into four equal portions. Spoon mixture into each apple, then top each with butter. Place apples in heat tolerant glass baking dish. With Flame Zone™ cover in place, start grill, adjusting setpoint temperature to 350 degrees. Pre-heat grill for 10 minutes. Place pan in center of grill, and cook for approximately 30-40 minutes, until apples become tender, but not mushy. Carefully remove hot pan, serve apples by themselves or with vanilla ice cream.