Preheat oven to 400 degrees Fahrenheit.  Add all crust ingredients to the bowl of a stand mixer and mix until combined.  This recipe yields two 9-inch pie crusts, however, I only use one for apple pie. Divide the dough in half. Sprinkle flour on the rolling surface and roll out dough.  Gently transfer to a 9 inch pie dish.  Crimp edges as desired.

Peal and slice apples and place in a large bowl.  Mix in sugar, cinnamon, and tapioca.  Arrange apples in the pie dish.  

Add crumb topping ingredients to a small bowl. Mix with the back of a fork until they are in small clumps. Add all crumb topping to the top of the pie, spreading evenly over the apples.  Cover the edges of the crust with a pie shield or foil to prevent burning.  Bake for 45-50 minutes.