Empanadas de Camote

My grandma often bought sweet potatoes and used them to make a dessert rather than a savory dish. She would make empanadas with whatever was in season, and her sweet potato empanadas were a special treat. Because an empanada is a handheld pie, it is a perfect dessert after a Thanksgiving feast—no dishes or utensils needed. This classic filling is flavored with piloncillo and warm fall spices. I have given the dough a modern touch with the addition of beer and butter, which results in