Mix the margarine and sugar until creamy and gradually add the eggs. Slowly pour in the baking powder and flour while stirring and add the walnuts. Spread the dough on a baking sheet and bake at 200 ° C for 20 minutes.
Let cool, cut off the edges and work into crumbs. Cut out small cakes with a glass.
Mix the butter and milkmaid to a cream and brush the cakes with the cream. Finally roll in the crumbs.