Coarsely chop the peanuts. Chop chocolate, dice butter. Melt both over a warm water bath. Mix in sugar, salt and vanillin sugar. Stir in eggs one after the other.
Stir in flour and nuts. Grease a fat pan of the oven (32 x 39 cm) and dust with flour. Fill in the dough and smooth it down. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 40 minutes. Take out, remove cake from the edge of the pan and let it cool down. Coarsely chop the couverture separately and melt separately over a warm water bath. Cover the cake with dark chocolate coating. Pour white couverture into a freezer bag and cut off a small corner. Spray stripes at regular intervals on the dark chocolate coating and pull through with a wooden skewer.
Coarsely chop the couverture separately and melt separately over a warm water bath. Cover the cake with dark chocolate coating. Pour white couverture into a freezer bag and cut off a small corner. Spray stripes at regular intervals on the dark chocolate coating and pull through with a wooden skewer. Leave to dry. Cake plate can then be cut into cubes with a bread knife
waiting time approx. 2 hours