Heat a very large skillet or griddle over medium. When hot, melt enough butter on the hot surface to give it a light, even coating, then lay on as many tortillas as will comfortably fit. Sprinkle a portion of the cheese on each one, followed by a portion of the candy. When the cheese is mostly melted, fold the tortilla in half and cook for a minute or so on each side to brown and melt the gooey caramel. I like to cut these in half, lay them slightly overlapping on a serving plate and sprinkle them with sugar. Serve right away.