Grease an ovenproof mould. Put the peaches in a sieve and drain well. Peel the mango, cut the flesh off the stone and dice. Preheat the oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see
Separate eggs. Beat the egg whites with the whisks of the mixer until stiff. Cream 50 g butter, sugar, vanilla sugar and 1 pinch of salt with the whisks of the mixer. Stir in egg yolks, quark and pudding powder.
Fold the fruits into the quark mixture and fold in the beaten egg white in portions.
Pour the curd mixture into the mould, but do not fill to the top. Coarsely crumble the Amarettini over it. Bake in a hot oven for 50-60 minutes. If necessary, cover with aluminium foil about 15 minutes before the end of the baking time. Remove and dust with icing sugar.
Enjoy the casserole warm.