To make the nut cookies with marzipan, crumble the marzipan between your fingers and place in a bowl. Add the nuts, a pinch of cinnamon, sugar and only 1 egg white at first, mix thoroughly and knead everything vigorously. Add next egg white and some rum, work through and continue like this until a nice mass is formed.
Line a baking tray with baking paper. Using two coffee spoons or a piping bag with a smooth nozzle, pipe the mixture onto the baking sheet in the shape of small bushels, not too close together. Put the powdered sugar in a sieve and sprinkle it on the biscuits.
Leave to dry for at least one hour. Bake in a hot oven at about 150 °C for about 15 minutes. And the nut buns with marzipan are ready.