Preheat the oven to 200°C/180°C fan/gas mark 6.
Place the Fate Low Protein All-Purpose Mix, sugar, baking powder, cinnamon, egg replacer and butter into a large bowl and mix with your fingertips, until you reach a breadcrumb consistency.
Stir in the apples and sultanas.
Pour in the ProZero and stir until a smooth batter forms.
Transfer the batter into the tin and bake in the oven for 25 minutes or until a skewer inserted into the centre of the cake comes out clean.
Remove from the oven and allow to cool.
Fate Low Protein All-Purpose Mix and ProZero are foods for special medical purposes and must be used under medical supervision. This recipe has been specifically designed for a low protein diet. Refer to labels for allergen and other product information.