Mix the flour with baking powder and cocoa. Add softened butter, a little water, sugar, one egg, and knead the dough. Roll out the dough and transfer it to a greased baking sheet. Layer the filling on top of the cocoa dough, which is prepared from quark, eggs, Zlatý klas, chopped chocolate, and sliced almonds. You can flavor it with sugar and vanilla sugar. The last layer will be light sponge cake dough. Beat eggs with sugar, add water and oil. Finally, incorporate flour with baking powder. Pour the batter over the quark layer. You can sprinkle the top with sliced almonds. Bake the cake in a preheated oven at 180°C for about 25 minutes.