Lightly roast the nuts in a pan without fat, remove and chop them except for something to decorate. Knead marzipan, icing sugar, cinnamon, chopped nuts and calvados. Wash apples and grate them dry. Remove the core with an apple corer. Pour marzipan mixture into the apples and place on a baking tray lined with baking paper.
Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for about 20 minutes. Meanwhile bring apple juice and cranberries to the boil. Cut apples into slices and arrange on plates with cranberries and walnuts. Dust with cinnamon sugar