Butter a pie dish generously and set it aside. I used a 8 inch pie dish. Day before, Make a batch of shortcrust pastry and store in fridge.
Take the pastry out the prepared dough out of fridge and cut into two equal portions. Take one of the dough and roll in between two sheets of plastic wrap. Line the pie plate with the sheet. Prick the pastry using a form and Put this in fridge till you make filling.
Make the filling by mixing all the ingredients given for filling except butter in a sauce pan. Set aside to macerate for 30 minutes. You will see lots of juices from the apple. Now add in butter and place it on heat. Cook on high heat for 5 minutes stirring often. Once it has thickened slightly. Place it in fridge and let it cool completely.
Take the pie plate from fridge. Fill the pie plate with the prepared filling. Now Take the other half of the pastry and roll exactly like the same. Cover the pie with the other half of the rolled pastry.
Fold the rim and using a fork pinch the sides of the rim. You can crimp the pie edges. Brush the top with some milk or egg wash. Take a knife and make slashes in the centre of the dough.
Bake this for 15 mins in 220 degree C oven, Now reduce the temp to 190 Degree C and bake for another 45 mins. Remove it from oven and set aside to cool.
Let the apple pie rest for 4 hours before slicing. Serve warm or hot with vanilla ice cream.