Preheat the air fryer to 350 F for 5 minutes.

Lay the tortillas on a work surface and make sure they are at room temperature and flexible.

Spoon a line of apple pie filling down the center of each tortilla, using about 1/3 cup filling per tortilla and leaving a small border at each end.

Roll each tortilla up tightly around the filling and place seam side down.

Brush the outside of each rolled tortilla generously with melted butter, coating the tops, sides, and ends.

In a shallow bowl, stir together the granulated sugar and ground cinnamon until well combined.

Roll each buttered taquito in the cinnamon sugar mixture, coating all sides evenly.

Arrange the taquitos in a single layer in the air fryer basket, seam side down, leaving space between each one for air circulation.

Air fry at 350 F for 6 minutes, then carefully flip each taquito.

Continue air frying for 4 to 6 minutes, until the tortillas are crisp and deep golden and the filling is bubbling at the ends.

Remove the taquitos from the air fryer and let them cool for 3 to 5 minutes before serving.