Flour kiss

Mix well butter, flour, sugar, egg yolks and vanilla sugar. Roll the dough into a layer 1 cm thick and cut out round cakes with a small cup. Then lay them on a butter-greased, floured baking sheet. Then beat the egg whites into a strong foam, mix it with powdered sugar and spread the mass on the cakes. Use your finger to make a recess in the middle and put one bone-free cherry or cherry jam in it.