For the dough melt butter and let it cool down a little. Beat the eggs, sugar, 1 pinch of salt and vanilla pulp until light creamy. Whip butter and milk. Mix flour and baking powder, sieve on top and mix everything to a smooth dough.
Peel, quarter and core the apples. Slice the apples in fine slices directly into the dough, mixing them immediately with the dough so that the apple slices do not tarnish.
Fill half of the apple mixture into a greased, flour-blasted box form (30 cm long). Select the raspberries and spread them close together. Spread the rest of the apple mixture on the raspberries and smooth it down.
Bake the cake in a preheated oven (electric cooker: 200 °C/circulating air: 180 °C/gas: see manufacturer) for approx. 1 hour. Leave to cool in the mould. Remove the cake from the tin and serve dusted with icing sugar. Crème fraîche tastes good with it.