Drain the apricots on a sieve. Beat butter, 250 g sugar and vanillin sugar until creamy. Stir in 4 eggs bit by bit. Mix flour, starch and baking powder and stir into the egg mixture.
Spread the dough on a greased, breadcrumbed pan of the oven (32 x 39 cm). Spread the apricots on the dough. Pre-bake in the preheated oven (electric cooker: 175 °C/ gas: level 2) for approx. 20 minutes.
Mix crème fraîche, remaining eggs, lemon peel and remaining sugar. Remove the cake. Spread the icing on it and sprinkle with almonds. Bake for another 25 - 30 minutes at the same temperature.
Results in about 20 pieces.