Grease a fat pan (approx. 32 x 39 cm; at least 3 cm deep) and sprinkle with breadcrumbs. Drain the apricots well
Beat eggs, sugar and salt for about 15 minutes until fluffy. Mix quark, mascarpone and vanillin sugar. Stir into the egg mixture. Stir in the pudding powder evenly
Spread the cheese mixture on the fat pan. Carefully place the apricots on top with the convex side down. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/gas: level 2) for about 1 hour. Leave to cool on the fat pan for at least 6 hours
Roast the flaked almonds in a pan without fat, let them cool down. Heat jam and pass through a sieve. Spread apricots with it. Dust the slices with icing sugar before serving and sprinkle with almond flakes