Roll out 2/3 of your pastry until it is large enough to fill a deep pie dish.
Peel and core the apples and cut into 1.5 inch cubes.
Place the apple into a large bowl along with the blackberries, spices and sugar. Mix together.
Pour into the pie dish.
Roll out the remaining pastry and cut into strips long enough to cover the top of the pie in a lattice pattern (see pictures).
Brush with an egg wash and a sprinkling of sugar.
Bake in the centre of your oven for 45mins.
Notes
This pie can be frozen before cooking. If cooking from frozen, bake at gas mark 4 for 45 minutes before turning the heat up to gas mark 5 and cooking for a further 20 minutes.