Fill: Lay tortillas flat. Spoon approx. 2 tbsp of apple pie filling in a line across the center of each.
Roll: Roll the tortillas tightly to enclose the filling.
Coat: Brush the outside of each roll generously with melted butter. In a shallow dish, whisk the sugar and cinnamon together, then roll each taquito in the mixture until evenly coated.
Arrange: Place taquitos in the air fryer basket seam-side down to prevent them from unrolling. Do not stack them; cook in batches if necessary.
Air Fry: Cook at 350°F (175°C) for 9–11 minutes until golden.
Flip: Carefully flip the taquitos and cook for an additional 3–4 minutes until perfectly crispy all the way around.
Serve: Enjoy warm. These are incredible paired with a scoop of vanilla ice cream or a drizzle of caramel sauce.