Pre-heat oven to 350*F.
Grease and lightly flour (using coconut flour), two 8-inch cake pans.
In a large mixing bowl or stand mixer, beat together the butter and sweetener until light and fluffy.
One at a time, beat in your eggs and then the vanilla and almond extract.
In another bowl, whisk together your almond flour, coconut flour, baking powder, xanthan gum and salt.
Add the dry ingredients to the wet and stir well until everything is combined (or use the paddle attachment on your stand mixer).
Spread the thick batter evenly into the two 8-inch cake pans. You can use your hands to help flatten it. The cakes won't be super thick, this is okay!
Bake the cakes for ~30-35min or until golden brown, and a toothpick comes out clean (the edges of the cake will pull away from the sides of the pan as well).
Cool the cakes completely in their pans, placed on top of a wire rack if you have one.