Peel, quarter and core the apples. Cut the quarters into pieces, simmer the lemon juice, 100 ml water, 75 g sugar and the apple pieces for about 15 minutes, then leave to cool.
Knead 300 g flour, 150 g sugar, 1 packet of vanilla sugar, almonds and 175 g fat to make crumble.
Beat the rest of the fat, vanilla sugar and sugar until frothy. Add the eggs one by one and stir in the sour cream. Mix in the remaining flour and baking powder and stir in. Spread the dough on a greased baking sheet, spread the apple compote on it and pour the crumble on top.
Bake in a preheated oven (electric stove 200 ° C / convection 175 ° C / gas mark 3) for 35 - 40 minutes.