Mix all the dry ingredients together - whole wheat flour, all purpose flour and salt.
Add olive oil and with your fingers mix the oil in the flour evenly to get a breadcrumb consistency. It gives a flaky texture to the crust. the whole mixture should look like breadcrumbs.
Add water and just bind the whole mixture together. form a dough but don't knead.
Peel, core and slice the apples. Mix the cinnamon powder, sugar and whole wheat flour into the apples.
Preheat your oven. Grease your pie pan or pans with olive oil. Divide the dough into two or four equal parts depending on the size of your pie pans.
Roll the divided parts of the dough on a dusted work surface. Cover the rolled pie crusts with a napkin so that they don't dry out. Place one of the rolled pie crust gently on a greased pan and press it towards the bottom and the edges.
Arrange the apple slices with the filling evenly on the bottom pie crust. Top the apple slices with dots of butter or a few drops of olive oil.
Cover the pan with another rolled pie crust and fold the edges of the top crust over and under the bottom edges. Flute the edges.
You can also cut strips from the rolled dough and create a lattice pie crust.