cream the butter and sugar and then add the egg and mix until combined.
Add the cinnamon, cardamon, flours, baking powder and mix
Press half the crumble mixture into a lined pie dish.
Place a piece of baking paper on top and then uncooked rice. Blind bake for 10 minutes at 180C.
Remove the paper and rice and cook for another 5 minutes.
Apple filling
In a bowl, add the sliced apples, lemon juice and sugar and mix.Lay the apple slices evenly on top of the crumble base. Pour over any remaining liquid.Sprinkle the remaining crumble mixture over the top.Bake for 50m minutes.