Melt 75 g butter. Mix flour, 75 g sugar, salt and vanillin sugar. Add the egg yolks. Heat milk, crumble yeast into it and dissolve in it. Add butter and yeast-milk mixture to the flour mixture. Knead everything to a smooth dough. Cover and leave to rise in a warm place for about 40 minutes.
Knead the dough well again. Put it on a greased baking tray sprinkled with flour and roll out evenly. Let it rise again in a warm place for about 20 minutes. Press hollows into the yeast dough and distribute 125 g butter in flakes. Sprinkle with almonds and 125 g sugar. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for about 20 minutes. Remove from the oven and let it cool down on a cake rack