Melt the butter and let it cool down. Peel, halve and core apples. Cut the round side of the apple with a knife several times about 1 cm deep. Drizzle apples with lemon juice. Put flour, baking powder, sugar, salt, eggs, milk, almonds and butter in a bowl.
Mix with the whisk of the hand mixer. Grease a fat pan (32 x 39 cm) and dust with flour. Pour in the dough and smooth it down. Dab apples dry and spread on the dough. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 35 minutes. Let the cake cool down on a grid. Heat the jam and pass through a sieve. Spread the cake with it and sprinkle with sugar crystals. Cut into pieces and arrange on a plate.
Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 35 minutes. Let the cake cool down on a grid. Heat the jam and pass through a sieve. Spread the cake with it and sprinkle with sugar crystals. Cut into pieces and arrange on a plate. Decorate with lemon balm
1 hour waiting time