Peel and quarter the apples and cut out the core. Drizzle the apple quarters with lemon juice.
Pour the cream into a bowl. Add 200 g sugar, vanilla sugar and grated lemon zest to the cream and whip until half-stiff. Gradually stir in the eggs. Mix the flour and baking powder, sieve over the cream and egg mixture and stir in.
Grease the oven`s drip pan and smooth the dough over it. Cover with the apple quarters and bake in a preheated oven at 175 ° C for 15 minutes. Bring the butter, 50 g sugar and milk to the boil, fold in the almonds. Spread on top of the cake and bake for another 15 minutes. Remove the cake and let it cool down.