Sweet Potato Turnovers (or Empanadas?)

My sister in law has been here and so we started early with our Thanksgiving feasting. She cooked earlier this week, and we still have pans and pans of food in the fridge. My favorite of her dishes is a traditional Candied Sweet Potato dish, where she boils chunks of sweet potatoes (or yams? What are those things?) with butter, a ton of sugar and cinnamon. After she squeezes a bit of lemon in it, we’re left with this beautiful goodness…