Cut the fat into small cubes and put them into a mixing bowl with flour, sugar, egg yolk and 1-2 tablespoons of ice water. Mix with the dough hooks of the hand mixer and then knead with your hands to a smooth dough. Cover and put in a cool place for about 30 minutes. In the meantime, for the macaroon mixture, mix marzipan, sugar and egg to a smooth cream. Put into a piping bag with a star-shaped spout.
Mix mascarpone, yoghurt, sugar, cinnamon and sauce powder. Wash, peel and quarter the apple and cut out the core. Cut the apple quarters into slices. Roll out short pastry on a floured work surface and cut out 8 circles (9-10 cm Ø). Place on a baking tray lined with baking paper and bake in a preheated oven (electric range: 200 °C/ gas: level 3) for about 7 minutes. Spray a dotted edge onto the pre-baked, hot cookies with the macaroon mixture. Fill with mascarpone cream and spread the apple slices on top. Bake in the preheated oven (electric: 200 °C / gas: level 3) for 15-20 minutes. Heat up the apricot jam, pass through a sieve and coat the finished pieces with it.
Place on a baking tray lined with baking paper and bake in a preheated oven (electric range: 200 °C/ gas: level 3) for about 7 minutes. Spray a dotted edge onto the pre-baked, hot cookies with the macaroon mixture. Fill with mascarpone cream and spread the apple slices on top. Bake in the preheated oven (electric: 200 °C / gas: level 3) for 15-20 minutes. Heat up the apricot jam, pass through a sieve and coat the finished pieces with it. Let it cool down