Roast the walnuts in a pan without fat. Take them out, let them cool down a bit and chop them roughly. Peel and quarter apples and remove the core. Cut quarters into small cubes and sprinkle with 2 tbsp. lemon juice
Cream fat, white and brown sugar with the whisk of the hand mixer. Stir in the eggs one by one. Mix flour and baking powder and stir in. Finally fold in nuts, cranberries and apples
Pour the dough into a greased, flour-scattered box form (approx. 28 cm long, 1.6 litres capacity) and bake in a preheated oven (electric cooker: 175 °C/ circulating air: 150 °C/ gas: level 2) for approx. 1 hour (stick test). If the cake gets too dark, cover with aluminium foil
Take the cake out of the oven, carefully remove it from the edge of the mould and after about 20 minutes turn it over onto a cake rack. Let the cake cool down
Sieve the icing sugar into a bowl. Add 2-3 tablespoons of lemon juice and mix to a thick glaze. Spread the icing on the cake with a spoon and let it dry for about 30 minutes
waiting time approx. 1 1/2 hours