Step 1: In a medium saucepan, combine water, butter, 2 tablespoons granulated sugar, and salt. Bring the mixture to a rolling boil over medium heat, stirring until the butter is completely melted.
Step 2: Remove the saucepan from the heat and immediately add the all-purpose flour all at once. Stir vigorously with a wooden spoon or spatula until a smooth ball of dough forms and pulls away from the sides of the pan.
Step 3: Transfer the dough to a large mixing bowl. Add the eggs, one at a time, beating well with an electric mixer after each addition until fully incorporated and the dough is smooth and glossy. Add the vanilla extract and beat until combined.
Step 4: Prepare your air fryer basket by lightly greasing it or lining it with parchment paper designed for air fryers. Preheat your air fryer to 375°F (190°C) for 5 minutes.
Step 5: Transfer the dough to a piping bag fitted with a large star tip (like an Ateco 826 or 1M). Pipe 1 to 1.5-inch long pieces of dough directly into the preheated air fryer basket, ensuring they are in a single layer and not touching. You will need to work in batches.
Step 6: Air fry for 8-10 minutes, or until the churro bites are golden brown and wonderfully crispy. The exact time may vary depending on your air fryer model. Do not overcrowd the basket.
Step 7: While the churro bites are air frying, prepare the cinnamon sugar coating. In a shallow dish, combine 1/2 cup granulated sugar and 1 tablespoon ground cinnamon.
Step 8: Immediately after removing a batch from the air fryer, toss the hot churro bites in the cinnamon sugar mixture until they are thoroughly coated.
Step 9: Serve your crispy air fryer churro bites easy wonderful warm with your favorite dipping sauces, such as chocolate sauce, caramel, or dulce de leche. Enjoy right away!