Preheat the air fryer: Set it to 350°F (175°C) for 3–5 minutes. A preheated basket helps the bites cook evenly and brown nicely.

Prep the coating: In a small bowl, mix the sugar, cinnamon, and a pinch of salt. In another bowl, add the melted butter.

Cut the dough: Open the biscuit can and separate the biscuits. Cut each biscuit into 4 equal pieces to create bite-sized nuggets.

Coat the bites: Dip each dough piece in melted butter, then roll it in the cinnamon sugar until fully coated. Shake off any loose excess.

Prepare the basket: Lightly spray or brush the air fryer basket with oil. Avoid heavy sprays that can cause sticking or off flavors.

Arrange and cook: Place the coated dough pieces in a single layer, leaving a little space between them. Air fry for 5–7 minutes, shaking the basket or turning the bites halfway. They’re done when puffed, set in the center, and golden on the edges.

Make the glaze: Whisk powdered sugar, milk, vanilla, and a pinch of salt until smooth. Adjust thickness with a drop more milk if needed—it should be pourable but not runny.

Glaze and serve: Let the bites cool for 2 minutes, then drizzle with glaze. Serve warm while the centers are still soft and the glaze sets slightly.

Repeat with remaining dough: Cook in batches as needed. Keep finished bites on a wire rack so the bottoms don’t steam and get soggy.