Follow these simple steps to create your amazing Puff Pastry Cinnamon Rolls:

1. Preheat the Oven: Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
2. Prepare the Puff Pastry: On a lightly floured surface, roll out the thawed puff pastry into a rectangle, approximately 12×16 inches.
3. Spread the Butter: Evenly spread the softened butter over the surface of the puff pastry, leaving a small border around the edges.
4. Mix Cinnamon Filling: In a small bowl, combine the brown sugar and ground cinnamon.
5. Add Cinnamon Mixture: Sprinkle the cinnamon-sugar mixture evenly over the buttered pastry.
6. Roll It Up: Starting from one long side, carefully roll the pastry tightly into a log shape.
7. Slice the Rolls: Use a sharp knife to cut the rolled pastry into 12 equal slices.
8. Arrange on Baking Sheet: Place the cinnamon rolls on the prepared baking sheet, leaving space between each roll.
9. Bake: Bake in the preheated oven for 25-30 minutes or until golden brown and puffed up.
10. Prepare the Icing: While the rolls are baking, whisk together the powdered sugar and milk in a small bowl until smooth. Adjust the consistency with more milk if needed.
11. Cool the Rolls: Once baked, remove the rolls from the oven and allow them to cool on the baking sheet for about 15 minutes.
12. Drizzle Icing: Drizzle the icing over the warm cinnamon rolls before serving.

These simple steps will guide you in creating delicious Puff Pastry Cinnamon Rolls that everyone will love!