Carrot cake with cream cheese & white chocolate frosting

For the cake:

400 g sugar 250 g pastry flour 4 medium carrots, grated. 1 large red apple, grated (Tip: Blend the carrot and apple with ½ glass water, strain the juice, and use the pulp for the cake) 100 g chopped walnuts 125 ml sunflower oil 4 eggs 1 Pinch of salt ½ tsp cinnamon 1 tbsp baking powder

For the frosting:

350 g cream cheese 175 g powdered su 175 g white chocolate, melted