For the peanut caramel doughnuts, cut the butter into small pieces and mix with flour, yolks, milk and sugar to form a smooth dough. Let rest in the refrigerator for about 1 hour.
Heat the oven to 180 degrees top/bottom heat. Roll out the dough to a thickness of approx. 2-3 mm, cut out the cookies and bake on a baking tray lined with baking paper until golden brown.
Spread the cooled cookies with Nutella.
For the peanut caramel layer, melt the sugar slowly in a saucepan while stirring and let it turn golden. Stir in the honey and whipping cream and simmer for about 5 minutes until you get a creamy consistency. Then stir in the peanuts.
Leave the saucepan on the warm plate and spread on the cookies with teaspoons.