Knead 300 g flour, peanut butter, 100 g sugar and 100 g butter in flakes first with the dough hooks of the hand mixer, then with cool hands quickly to a smooth dough. Wrap in foil and chill for about 30 minutes.
In the meantime, roughly chop the nuts. Heat 50 g butter, 100 g sugar and honey in a pot while stirring until the sugar is completely dissolved. Add 20 g flour, nuts and cream, stir in and simmer for about 5 minutes at low heat.
Cut the dough in half. Form a triangular strand (3 cm edge length) from each half on a lightly floured work surface and cut into 1 cm thick slices. Place the triangles on 2 baking trays lined with baking paper.
Bake in a preheated oven (electric oven: 175 °C/ convection oven: 150 °C/ gas: level 2) for 10-12 minutes. Brush triangles with the nut mixture and bake for another 5 minutes. Remove cookies from the oven and let them cool down.