Make the dough

• Warm the milk and dissolve the sugar and yeast in it.
• Add the egg, melted butter, vanilla and salt, then mix in the flour.
• Knead into a soft, smooth dough.

Let the dough rise

• Cover the bowl and leave the dough in a warm place until doubled in size.

Shape the donuts

• Roll the dough out on a floured surface to about 1.5 cm thick.
• Cut out rounds with a cookie cutter and cut a small hole in the centre of each.
• Re-roll the trimmings and cut more donuts.

Air fry the donuts

• Place the donuts in the air fryer basket, leaving space between them.
• Air fry at 160 °C until golden, then repeat with the remaining donuts.

Glaze and serve

• Whisk the powdered sugar with the milk and melted butter into a smooth glaze.
• Dip the warm donuts in the glaze and let them set slightly before serving.