Preheat oven to 425 degrees.
Stir ingredients together and pour in pan. Dot with some butter.
Roll out the other half of the pastry and place on top of pie, sealing the edges and making a pretty design.
Prick the top to let steam out and juice bubble up.
Bake for 45 to 50 minutes. (TIP: Cover the edges with foil so they won’t brown too much.)
Check from time to time and remove foil for the last few minutes.