In a saucepan, combine water and butter over medium heat until the butter is melted. Bring to a boil.

Remove from heat and stir in flour, salt, and cinnamon until well combined.

Let the mixture cool for a few minutes, then add the eggs one at a time, mixing well after each addition.

Preheat the air fryer to 375°F (190°C).

Use a piping bag or a spoon to form small bite-sized pieces of the dough.

Lightly spray the air fryer basket with cooking spray and place the churro bites inside in a single layer.

Air fry for 8-10 minutes or until golden brown.

In a bowl, combine sugar and cinnamon for coating.

Roll the warm churro bites in the cinnamon-sugar mixture before serving.