Put 240g plain flour and 125g butter into processor, blitz until fine breadcrumbs. Add 3 tablespoons water, mix. Half dough. Roll on floured surface and line tin. Peel, core and grate 3-4 cooking apples into pastry. Sprinkle with 125g sugar, (cinnamon if desired). Roll out pastry and cover pie (pierce top twice). Brush top with milk. 200C 25 minutes.