Prepare the Crust
In a food processor, pulse almond flour, coconut flour, and salt until combined.
Add cold butter cubes and pulse until mixture resembles coarse crumbs.
Add egg and monk fruit sweetener, pulsing just until the dough begins to come together.
If the dough seems too dry, add ice water, one tablespoon at a time.
Form dough into a disc, wrap in plastic wrap, and refrigerate for at least 30 minutes.
Prepare the Filling
Peel, core, and slice apples into ¼-inch thick pieces.
In a large bowl, toss apple slices with lemon juice to prevent browning.
In a separate bowl, combine monk fruit sweetener, cinnamon, nutmeg, ginger, cloves, and arrowroot powder.
Add the spice mixture to the apples and toss until evenly coated.
Stir in vanilla extract.
Assemble the Pie
Preheat your oven to 375°F (190°C).
Remove dough from refrigerator and divide into two portions: 2/3 for the bottom crust and 1/3 for the top.
Roll out the larger portion between two pieces of parchment paper until it's about 12 inches in diameter.
Carefully transfer to a 9-inch pie dish, gently pressing into the bottom and sides.
Pour the apple mixture into the crust and dot with small pieces of butter.
Roll out the remaining dough and either cover the pie completely (cutting slits for steam to escape) or create a lattice pattern for a more decorative finish.
Fold and crimp the edges to seal.
Bake to Perfection
Place the pie on a baking sheet to catch any potential overflow.
Bake at 375°F for 20 minutes, then reduce temperature to 350°F and continue baking for 30-35 minutes more, until the crust is golden and the filling is bubbling.
If the edges of the crust brown too quickly, cover them with aluminum foil.
Remove from oven and allow to cool for at least 1 hour before serving to let the filling set.