Preheat oven. Preheat your oven to 200°C/180°C Fan/Gas 6. Grab a 25cm (10in) round shallow ovenproof pie dish.

Precook the apples. In a wide-based pan, combine the apples with 2 tablespoons of water and butter. Cook over a gentle heat for around 6 minutes, stirring regularly, until the apples become tender. Take it off the heat, mix in the sugar, and let it cool.

For the crumble topping. Measure the ingredients into a large bowl and rub them together with your fingertips until the mixture resembles breadcrumbs.

Assemble. Spoon the cooled apples into the pie dish, leveling the surface. Sprinkle an even layer of crumble topping over the apples, then add a dash of extra demerara sugar.

Bake. Pop it into the preheated oven for 20 minutes. Then, reduce the temperature to 180°C/160°C Fan/Gas 4 and bake for another 20 minutes until it turns golden and starts bubbling.

Serve. Serve it hot with cream, custard, ice cream, or crème fraîche!