Mix the almond flour, coconut flour, cinnamon, cocoa powder, Stevia, and salt in a medium sized bowl. You want them mixed fairly well so that there aren't clumps when you add the liquid.
Add the vanilla, egg, and melted butter and stir with a spoon to mix until all the dry ingredients are wet.
Press into a pie plate, patting down. Prick the bottom of the shell a few times with a fork.
Bake at 350F for 8-12 minutes until it just begins to brown.