Rinse and drain the raisins. Peel apples, quarter them, cut out the core. Dice apples. Finely dice marzipan. Whisk egg, salt, vanillin sugar and sugar with the whisk of the hand mixer until thick and creamy white.
Mix flour and baking powder. Stir the crème fraîche, oil and bitter almond flavouring well into the egg-sugar mixture. Add flour mixture and stir in. Fold in almonds, raisins, marzipan and apples. Line 12 hollows of the muffin tray with 2 paper baking cups each, distribute the dough evenly in them.
Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for about 20 minutes. Remove, let cool slightly on a cake rack and remove from the baking tray. Let it cool down and decorate with apple slices and roasted almonds.