Mix cheese, chilies, and chicken together and place in a freezer baggie. Place tortillas in a separate baggie and insert baggie of chicken mixture, before closing.
When ready, thaw in refrigerator. Rub butter on one side of tortillas and spoon chicken mixture between two tortillas with buttered side out. Place on a cookie sheet or baking pan and bake until cheese is melted (approximately 10-15 minutes). Serve with sour cream, salsa, and/or guacamole.