Peel and quarter the apples and cut out the core. Cut the apple quarters into pieces. Covered with sugar, 1 tablespoon cinnamon and 4-5 tablespoons of water, steam over medium heat for about 10 minutes until the apples have crumbled.
Stir in the advocaat. Let the compote cool off lukewarm.
Put half of the compote into four ovenproof moulds (each containing approx. 200 ml). Stir the yoghurt until smooth, spread on top and add the rest of the compote.
Beat the egg whites until very stiff, adding icing sugar at the end.
Spread the beaten egg white with a tablespoon in a cloudy pattern over the compote. Brown carefully with a kitchen gas burner.