Preheat the oven to 425°F.
Wash, peel, core, and slice the apples. Slice the apples into thin slices so that they bake better.
In a large mixing bowl, combine the apple slices, coconut sugar, maple sugar, tapioca flour, lemon juice, and cinnamon. Stir the apple slices until everything is coated.
Pour the apple slices into the unbaked pie crust and set aside.
In a food processor, gently pulse together the coconut flour, tapioca flour, and coconut sugar.
Cut the butter up into tablespoon size pieces and add them to the food processor. Pulse until crumbles form.
Sprinkle the crumbles evenly over the apple slices in the pie crust.
Place the pie on a baking sheet to catch any spills. Bake for 15 minutes.
Reduce the temperature to 350°F and bake for an additional 40-45 minutes. The apple filling should be bubbly. If the crust or crumble is getting too brown, cover it with some aluminum foil.
Allow the apple pie to cool completely before cutting and serving!