Knead flour, baking powder, 150 g sugar, 150 g fat in pieces and 1 egg smooth. Cover and chill for about 30 minutes.
Grease the springform pan (26 cm Ø). Roll out 2/3 of the dough on the bottom of the mould. Prick several times with a fork. Close the edge of the mould around it. Form the rest of the dough into a roll, place it on the edge of the mould and press it up 3-4 cm. Line dough with a piece of baking paper, fill in peas up to the height of the dough. Bake in the preheated oven (electric: 200 °C/ convection oven: 175 °C/ gas: level 3) on the lowest rack (gas: see manufacturer) for 20-25 minutes
Peel, quarter and core the apples. Cut crosswise into 0.5-1 cm thick slices. Sprinkle with lemon juice and mix with 75 g sugar, vanillin sugar and cinnamon. Heat 2 tablespoons of fat in a large pot. Steam apples in it at low heat for 5-8 min. covered, stirring from time to time. Drain and let cool down a little
Remove the peas and baking paper from the cake. Spread apple slices on the cake base. Coarsely grate the marzipan. Mix with icing sugar and 1 egg. Pour into a piping bag with a star-shaped spout, spray a grid and a rim onto the cake. Bake on the second rack from below at the same temperature for approx. 25 minutes
Stir the jam until smooth. Spread the hot cake with it. Let it cool down. Dust the cake with icing sugar