butter cookies 375g butter (at room temperature)150g sugar5 egg yolks500g flour Mix sugar, butter and egg yolks until creamy. With your hands fold in the flour to create a firm dough. Put the finished dough into the fridge to cool and to harden. Roll out the dough onto a floured surface and cut out the forms. Bake at 175°C for 15 to 25 minutes.