Peel apples and cut out the core. Cut the apples into 2 cm wide slices. Sprinkle with lemon juice. Cream soft fat, sugar, vanilla sugar and salt with the whisk of the hand mixer.
Add lemon zest. Stir in the eggs one by one. Mix flour and baking powder and stir into the mixture in portions alternating with the milk. Line the bottom of a springform pan (24 cm Ø) with baking paper.
Fill in 1/3 of the dough and smooth it down. Dab apple slices dry and spread half of them on the dough. Put another third of the dough on the apples and spread it smooth. Cover with the remaining apple rings and spread the remaining dough on top.
Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 1 hour. Let the cake cool down and take it out of the tin. Heat the jam in a pot while stirring and coat the cake with it.
Roast the flaked almonds in a pan without fat until golden brown. Remove from the pan, let it cool down a little and spread it on the cake. Dust with icing sugar. Makes about 12 pieces.