Dutch apple pie

Ingredients for base
Flour 2 cups heaped
Butter 5 ounces
Caster sugar 2 ½ ounce
Chilled water as required
Egg yolk 1
Baking powder ½ tsp
Ingredients for filling
Apples 3 cut in thin slices
Sugar ½ cup
Corn flour 1 tsp heaped
Cinnamon ½ tsp heaped
Lemon juice 2 tbsp
Method for filling
Put altogether in a sauce pan and cook till apples tender.
Method for dough
Sieve flour, baking powder add in butter and caster sugar, mix slightly with your hands till mixture resembles bread crumbs, add egg yolk, knead with chilled water, divide dough into half, make into balls, chill for 15 minutes, roll out one ball of the dough, spread on the base of the pie dish, bake blind for 15 minutes, remove, put filling, roll the leftover dough, place on top, brush with beaten egg white, bake for 30 minutes on 180 degree C.