Preheat oven to 180°C (160°C fan).
In a large bowl, mix flour, salt, and sugar.
Rub in butter until the mixture resembles breadcrumbs.
In another bowl, combine apples with sugar, flour, and cinnamon.
Lightly grease a baking dish.
Spread the apple mixture evenly in the dish.
Sprinkle the crumble mixture on top.
Bake for 40–45 minutes until golden and bubbling.
This easy apple crumble recipe is best served warm with cream or custard.