Apple crumble (excellent)

For the crumble
200g plain flour, sieved
117g white sugar
134g butter, cubed at room temperature
Knob of butter for greasing

For the filling
450g apples, peeled, cored and cut into 1cm/½in pieces
50g white sugar
1 tbsp plain flour
1 pinch of ground cinnamon

Preheat the oven to 180C/350F/Gas 4.
Place the flour and sugar in a large bowl and mix well. Taking a few cubes of butter at a time rub into the flour mixture. Keep rubbing until the mixture resembles breadcrumbs.
Place the fruit in a large bowl and sprinkle over the sugar, flour and cinnamon. Stir well being careful not to break up the fruit.
Butter a 24cm/9in ovenproof dish. Spoon the fruit mixture into the bottom, then sprinkle the crumble mixture on top.
Bake in the oven for 30-35 minutes until the crumble is browned and the fruit mixture bubbling.
Serve with thick cream or custard.