Preheat oven to 375 degrees F. Line a baking sheet with parchment paper.Unroll the puff pastry on a clean work surface. Brush the pastry with 1 tablespoon melted butter and then sprinkle with 1-2 tablespoons cinnamon sugar. Sprinkle the diced brie and cranberries evenly over the pastry. Starting at the long end, roll the pastry up as tightly as possible (like a cinnamon roll). Brush the roll with the remaining melted butter and then sprinkle the roll with cinnamon sugar to coat. Using a sharp knife, cut into 16 swirls.Place the swirls on the prepared baking sheet and bake 15-25 minutes or until the cheese is bubbly and the pastry golden, these are a little messy. Allow to sit on the pan about two minutes and before transferring to a serving plate. Serve warm.