Drain large tin of apricots. Dice the apricots finely. Separate 3 eggs. Chill the egg whites. Stir 900 g quark, yoghurt, 75 g stevia and pudding powder until smooth. Stir in 4 eggs and 3 egg yolks one after the other.
Mix in the apricots. Grease a springform pan (26 cm Ø).
For the dough mix flour and baking powder. Stir 100 g quark, oil, 1 egg and 25 g stevia until smooth. Quickly knead in the flour mixture. Roll out the dough on a floured work surface until it is approx. 28 cm round. Line the bottom of the mould with the dough and press the rim slightly upwards.
Add the curd mixture and smooth it down. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 55 minutes.
Beat the egg whites with salt until stiff. Gradually fold in 4 tablespoons of Stevia. Carefully spread the meringue mixture over the cake. Bake in a hot oven for another 10 minutes. Let it cool down on a cake rack.
Drain a small tin of apricots and collect the juice. Put the apricots with 6 tbsp. juice into a mixing cup and puree finely. Serve the cake with the apricot sauce. Sprinkle with flaked almonds if desired.