Preheat oven to 350 degrees F. In a large bowl cream the butter and sweetener together until very smooth. Add the salt, coconut flour, almond flour, and baking powder into the butter mixture. Mix until well combined. Place into 4 small torte pans or one 8 by 8 pie pan and spread out over the bottom. Bake for 12 minutes or until lightly golden.
FILLING:
In a medium bowl, beat the eggs with the sweetener. Add the butter, syrup, and vanilla then add the nuts. Pour into the crust (cover edges with foil) and bake at 350°F for 45-50 minutes or until set. Enjoy!