Beat the butter until soft and smooth. Alternately add powdered sugar and marzipan and stir until the mixture turns light. Gradually add the Grand Marnier, coconut flakes, cooking chocolate, maizena and flour. Shape the mixture into nut-sized balls and do not place them too close together on a baking sheet lined with baking paper. Press lightly flat with a floured fork or coarse wire sieve.
Bake in the middle of the preheated oven at 175 ° C top / bottom heat for about 15 to 20 minutes.
Tip: Instead of marzipan, orange liqueur and chocolate add approx. 150 g of finely chopped candied fruit.