Preheat the oven to 200 ?C
Sift the cake flour and baking powder together and add the sugar
Grate the butter and, using your fingertips, rub it into the dry ingredients until well mixed
Press two thirds of the pastry on to the base and along the sides of a large pie dish
Chill the rest of the pastry
To make the filling, divide each ingredient in half and arrange alternating layers of bananas, pie apples, pineapple and peach halves in the dish
Sprinkle with the nuts and fruitcake mix
Sprinkle the lemon juice on top and flavour judiciously with cinnamon, nutmeg and sugar
Repeat the layers and grate the rest of the pastry on top
Bake for about 1 hour or until the pie crust is done and golden brown
Serve hot or cold with whipped cream, if desired