Sprinkle feijoas evenly with raw sugar and cook in a saucepan with water. Set aside to cool.
Combine apples and feijoas in an ovenproof dish.
Sift flours into a bowl. Add the raw sugar and almond meal.
Rub margarine into flour mixture. Sprinkle crumble and flaked almonds over the apple and feijoa.
Bake in a moderate oven, 180°C, for 40 minutes or until golden.