Heat honey, sugar, vanilla sugar and butter in a small pot until the sugar is dissolved. Remove from the heat and let it cool down a little. Put the honey mixture into a mixing bowl.
Add eggs, cream, gingerbread spice, flour, baking powder and hazelnuts. Knead to a smooth dough with the dough hooks of the hand mixer. Cover the dough and let it rest at room temperature for about 20 minutes.
Then spread it on a greased baking tray. Press 2 almonds next to each other into the dough. Whisk egg yolk and cream. Brush the cake with the mixture and bake in the preheated oven (electric: 175 °C/ gas: level 2) for 20-25 minutes.
Leave to cool, sprinkle with the ground almonds and cut into pieces. Results in about 24 pieces.