Preheat the air fryer: Set it to 350°F (175°C) for 3–5 minutes so it’s hot and ready.

Prep the cinnamon sugar: In a shallow bowl, mix the sugar and cinnamon until evenly combined.

Melt the butter: Stir in vanilla extract if using. This helps the cinnamon sugar stick and adds flavor.

Cut the dough: Open the biscuit can and separate the biscuits. Cut each biscuit into 4 pieces to create bite-size chunks.

Coat the pieces: Dip each dough piece in melted butter, then roll in the cinnamon sugar to coat all sides.

Arrange in the basket: Lightly spray or line your air fryer basket with a piece of parchment made for air fryers. Place the coated dough bites in a single layer with a little space between them. Don’t overcrowd.

Air fry: Cook at 350°F (175°C) for 6–8 minutes, shaking the basket or flipping halfway. They’re done when puffed and lightly golden with no raw dough in the center.

Make the icing: Whisk powdered sugar, milk, vanilla, and a pinch of salt until smooth. Add more milk a few drops at a time if you want a thinner drizzle.

Glaze and serve: Let the bites cool for 2–3 minutes, then drizzle with icing. Serve warm.

Repeat: If you have more dough, repeat with remaining batches.