To use the almond flour pie crust for an apple pie, the crust needs to be pre baked on 350 degrees F for 10 minutes.
Prepare the apples by peeling and very thinly slicing the apples. Put apples in a bowl of water with some lemon juice to prevent browning during this process.
Drain the apples. and then mix in the arrowroot, moscavado, cinnamon and additional tablespoon of lemon juice. Stir well to coat apples.
To make the crumble topping, add all ingredients to a blender or food processor, and pulse until the mixture comes together in large crumbs. You want to retain some of the texture of the oats and walnuts, so don't over process.
Fill the pre baked crust with the apples (heap the apples above your crust - they bake down a lot!), and the top with the crumble topping.
Use a silicone pie shield to cover the crust and prevent over browning. If baking this in a conventional oven, it's okay to cover the crust with a strip of foil.
Bake the pie in the Sharp Superheated Steam Countertop Oven for 50 minutes on 350 degrees. If baking in a conventional oven, preheat the oven to 350 degrees, and bake for 1 hour and 20 minutes.