1Mix sugar and cinnamon in a small bowl until evenly combined.
2Roll out the puff pastry sheet on a flat surface.
3Sprinkle the sugar-cinnamon mixture evenly over the entire surface of the pastry.
4Gently roll over the pastry with a rolling pin to press the mixture into the dough.
5Roll the pastry tightly into a compact cylinder.
6Cut the cylinder into slices about 3 cm (1.2 in) thick.
7Place the slices on a tray and freeze for 10 minutes.
8Remove the rolls from the freezer and arrange them in the air fryer basket, leaving space between them (do not overcrowd).
9Set the air fryer to 200°C (400°F) and cook for 10 minutes, until golden, crispy, and slightly caramelized.