Pre-heat oven to 180°C / Gas Mark 4.
Tip the drained fruit into a buttered 1.5-litre ovenproof dish, not too deep.
Mix the oats, flour and cinnamon in a large bowl. Add the butter in small chunks and rub in gently. Stir in the WHITWORTHS DEMERARA SUGAR and rub in again. Sprinkle the crumble topping evenly over the fruit and bake for 30-35 minutes until the juices from the fruit start to bubble up. Cool for 10 minutes before serving.