Wash, quarter and core the apples. Cut apples into cubes. Bring to the boil with 5 tbsp. water, vanilla sugar and 1-2 tbsp. sugar. Steam the apples for 3-5 minutes
Put all but 4 Amarettini in a plastic bag. Close the bag and crumble the Amarettini with a rolling pin.
Whip the cream until stiff, while pouring in 1 teaspoon sugar. Stir the yoghurt until smooth and fold in the cream. Layer yoghurt cream, apples and amarettine crumbs in 4 glasses, finishing with cream. Decorate with remaining amarettini