For the nut tart, first cover the bottom of a springform pan with baking paper, grease the edges with butter.
Quickly knead all the ingredients for the dough. Form into a ball, wrap in plastic wrap and refrigerate for about 1 hour.
Mix the ingredients for the filling well.
Separate a quarter of the dough and set aside. Roll out the remaining dough and line the springform pan with it. Pour the filling into the pan.
Preheat the oven to 180 °C.
Roll out the set aside dough as well and cut it into strips. Place over the cake as a lattice. Place the nut halves on top.
Whisk the egg yolk and brush the pastry strips with it. Put the nut cake in the oven for about 45 minutes. Allow to cool and remove from the mold.