Drain the apricots. For the dough, pour cream into a mixing bowl. Wash a cup, dry and use to measure the other ingredients. Add sugar, vanilla sugar and lemon zest to the cream and beat until half firm.
Stir in the eggs one by one. Mix flour and baking powder, stir in. Spread the dough into a greased fat pan of the oven. Cover with apricots. Pre-bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 15 minutes.
In the meantime, boil up fat, sugar and milk for the icing. Stir in flaked almonds. Spread on the cake and bake for another 15-20 minutes. Makes about 25 pieces. Serve sprinkled with whipped cream and almonds.