Thaw puff pastry until pliable and cut into bite-sized squares.
Mix cinnamon and sugar together in a bowl and set aside.
Arrange puff pastry squares on air fryer rack or baking sheet lined with parchment paper. Do not overlap.
Air fry for 4 minutes, shake, then air fry 1–2 more minutes until golden brown. For oven, bake 15 minutes until golden.
Immediately toss hot bites in cinnamon sugar mixture to coat evenly.
Serve warm with optional dipping sauces.
Notes
For best results, coat bites in cinnamon sugar while they’re still hot. Dipping sauces are optional but highly recommended. Store leftovers in airtight container up to two days or freeze for later enjoyment.