To prepare the crust, In a mixing bowl add flour, sugar, salt and butter. Mix it well until it resembles bread crumb.
Add cold water and combine all the ingredients. Prepare a tight dough and let this dough rest in refrigerator. Do not knead the dough.
To prepare the stuffing, in a pan add diced apple, butter, brown sugar and cinnamon powder.
Cook for few minutes until apple is half done.
Take out this mixture in a bowl and let it cool completely.
Preheat the oven at 180°C.
On a floured surface, roll the dough into a sheet about ¼ inch in thickness. Cut circular discs out of it.
Transfer these cut-outs into a greased pie tins and finish all the edges to get neat pie.
Prick all-over lightly with fork. Bake them in preheated oven for 8-10 min.
After 8 minutes, take the mould out and put the stuffing. Cover the top with another layer of pie crust (Dough).
Brush with Milk and bake in a preheated oven for about 25 minutes.
When baked, take out from oven, de-mould, dust some icing sugar and serve.