Apple pie. For my money, it's the best dessert to grace our tables and slide down our gullets in the past bazillion years. Sweet, tart, warm, gooey, and crumbly... it's no wonder it's an American icon. But why limit this goodness to your oven? Let's take a journey with the recipe, step out of the kitchen, and head into the great outdoors (or your backyard) to create a rustic cast iron apple pie cooked over an open flame.