Wash the apples thoroughly, peel them, and slice them thinly.
Mix the sliced apples with sugar, cinnamon powder, and lemon juice.
Combine whole wheat flour, butter, and salt to make the dough.
Roll out the dough into a circle and place it in the apple pie pan.
Place the apple filling on top of the pie crust.
Cover with the top dough and press the edges to seal.
Brush egg wash on top and make slits with a knife.
Bake in a 180°C oven for 40-45 minutes until done.