For preparing easy apple pie, place the flour and butter into a bowl and rub the butter into the flour.
Mix in the rest of the ingredients: icing sugar, egg yolk and cold milk. Knead briefly on a lightly floured work surface, then leave to rest for 30 minutes.
Roll out and line a pie dish and bake blind at 400 F(200 C) for 18 to 20 mins to get the pie shell.
Cook the chopped apple with lemon juice, ground cinnamon, sugar and water till apples are translucent.