Cut the fat into cubes and knead with flour, sugar, vanillin sugar and egg to a smooth shortcrust pastry. Halve the dough and knead it under one half of cocoa. Cover the dough and put it in a cool place for about 30 minutes.
Roll out light-coloured dough thinly on a floured work surface and cut out approx. 16 flowers (7-8 cm Ø). Place on a baking tray lined with baking paper. Mix egg yolk and cream and spread the cookies with it.
Bake in the preheated oven (electric oven: 200 °C / gas: level 3) for approx. 10 minutes, take out and let cool on a cake rack. Roll out the dark dough as well and cut into strips of approx. 7 cm width.
Then cut these into isosceles triangles. Place the triangles on a baking tray, do not brush them and bake in a preheated oven (electric cooker: 200 °C/ gas: level 3)
Take out and let it cool down. Spread triangles with Nutella and stick them on the flowers. Put in a cool place. Meanwhile, chop the chocolate coating and melt it in a hot water bath. Put the couverture in a small freezer bag, cut off a small corner and decorate the cookies with strips and one almond each.
Allow to dry. Results in about 17 cookies.