Preheat oven to 180 C/ 170 C fan and butter a pie or casserole dish.
Peel and core your apples. Chop them into bite sized pieces and add the sugar, cornflour and cinnamon. Toss to coat and arrange in the base of your dish.
To prepare the topping, measure the dry ingredients into a medium sized bowl.
Add the cubed butter and rub the mixture between your fingertips until it resembles coarse breadcrumbs. Take care not to overmix or the butter and sugar will cream and you'll get a dense topping. We want to keep this as light as we can.
Sprinkle the topping over the apples and bake for 30-35 minutes, until the top begins to golden.
Serve hot with custard or ice cream. It's equally delicious cold for breakfast the next morning!
Mum of three, daydream adventurer, OU Life Sciences graduate, occasional crafter, ex-pat Canadian & quite possibly Britain's most northerly food blogger.