Preheat the oven to 375F and make sure you have a rack positioned at the bottom of the oven.
Grease a 9" deep dish pie plate with ghee and line with bottom pastry. Place in the refrigerator while you work on the rest of the ingredients.
Make the crumble: mix all the ingredients with your fingers until very well combined; set aside
In a large mixing bowl, mix tapioca starch, ground cinnamon, nutmeg, salt and vanilla powder; add the sliced apples, cubed cheese and about 1/3 of the crumble to the bowl mixture and then toss with your hands until all the pieces are evenly coated with the starch / cinnamon mixture, then transfer to the reserved pie crust and arrange nicely.
Pour the maple syrup over the apples and then arrange the remaining crumble over the top of the pie.
Place the pie on the bottom rack of the oven and bake for about 30 minutes or until the crust and crumble are nice and golden.
Kill the heat, leave the door ajar and let the pie sit in the oven for another 10 minutes.
Remove the pie from the oven and allow it to cool for at least an hour before serving.