01 - Set the oven temperature to 400°F and prepare a baking sheet by lining it with parchment paper.
02 - Unroll the puff pastry on a lightly floured surface, positioning the long edge closest to you.
03 - Use a pastry brush to evenly coat the entire surface of the pastry with melted butter.
04 - Combine granulated sugar, ground cinnamon, and a pinch of salt in a small bowl, then sprinkle this mixture uniformly over the buttered pastry.
05 - Starting from the long side, roll the pastry tightly into a log shape.
06 - Cut the rolled log into 12 even pieces using a sharp knife.
07 - Place each swirl flat on the prepared baking sheet, ensuring they are spaced apart.
08 - Mix granulated sugar and ground cinnamon, then sprinkle evenly over the swirls.
09 - Bake for 18 to 20 minutes until the swirls are golden brown and crisp.
10 - Allow the swirls to cool slightly on a wire rack before serving.