Preheat the air fryer. Set it to 350°F (175°C).
Let it heat while you prep.
Make the custard. In a shallow bowl, whisk eggs, milk, vanilla, sugar, cinnamon, and a pinch of salt until smooth. You want a well-blended, slightly thick mixture.
Prep the rolls. You can keep the 12 rolls connected as a slab and slice horizontally to create two layers, or separate them into individual rolls. For more crusty edges, separate them; for pull-apart squares, keep them connected.
Dip, don’t drown. Quickly dip each roll (or each slab side) into the custard.
Let excess drip off. The rolls soak fast—1–2 seconds per side is plenty.
Grease the basket. Lightly spray or brush the air fryer basket with oil or melted butter to avoid sticking and promote browning.
Arrange in the basket. Place rolls in a single layer with a little space between pieces. Don’t stack.
Work in batches if needed.
Air fry until golden. Cook at 350°F for 6–8 minutes, flipping halfway. They’re done when the edges are lightly crisp and the centers feel set, not squishy.
Optional cinnamon-sugar finish. While hot, brush with a little melted butter and dust with cinnamon sugar for a churro-style crust.
Serve warm. Top with maple syrup, powdered sugar, or berries. For a brunch board, add bacon, sausage, or scrambled eggs.