I just learned about a specialty of Louisiana: Natchitoches Meat Pie, which they sell in local restaurants and is made with beef, pork, spices and fried in local peanut oil.
So I thought of other variations: Empanadas (meat, fruit), Jamaica Beef Patties, Cornish Pasties, Calzone, etc. Pretty universal. In fact I struggled about where to put this topic: Snacks? International food? Desserts? Chicken? Could go everywhere!