Apple, Sultana and Cinnamon Crumble Gallery Apple, Sultana and Cinnamon Crumble in step by step photos… Put the flour and butter together in a large bowl. Rub the flour and butter together using just your fingers and thumbs until it resembles breadcrumbs. Mix the caster sugar into the mixture before setting aside. Peel, core and slice up the cooking apples and lay them evenly in the bottom of a dish. Sprinkle the sultanas over the apple slices. Mix the cinnamon and sugar together and sprinkle this evenly over the apples and sultanas. Tip the crumble topping over the apple and sultana filling and spread out evenly and to the edges before putting in the oven for up to 1 hour. Remove the crumble from the oven when it is golden and bubbling and a knife goes in easily. Leave to cool for at least 15 minutes before serving with custard, cream or ice cream. Back—>