Preheat and prep: Preheat your air fryer to 350°F (175°C) for 3–5 minutes. Lightly spray the basket or use an air fryer liner. Don’t skip this—preheating helps with even browning.

Loosen the Nutella (if needed): If your Nutella is very thick, stir in 1–2 teaspoons of milk to make it pipeable. You want a soft, spoonable consistency.

Portion the dough: If using biscuit dough, separate into individual biscuits. For pizza dough, divide into 8 equal pieces and roll into 4–5 inch rounds.

Fill the centers: Place about 1–1.5 teaspoons of Nutella in the center of each piece. Don’t overfill or it may leak during cooking.

Seal the donuts: Fold the dough over the filling and pinch all edges together, forming a sealed ball or half-moon. Press seams firmly. Use a fork to crimp if needed. Make sure there are no gaps.

Brush and spray: Lightly brush each donut with beaten egg or milk for shine and color. Mist with a little oil spray to encourage browning.

Air fry in batches: Arrange donuts in a single layer without touching. Air fry at 350°F (175°C) for 6–9 minutes, flipping halfway. They’re done when golden brown and puffed.

Coat or glaze: While warm, toss in granulated sugar (or cinnamon sugar). For a glaze, mix 1/2 cup powdered sugar with 1–2 teaspoons milk and a drop of vanilla, then drizzle over slightly cooled donuts.

Rest briefly: Let the donuts sit 3–5 minutes before biting. The filling will be hot, and this short rest sets the texture.

Serve: Dust with powdered sugar if you like. Enjoy warm for the best texture and gooey center.