Preheat the oven to 375. In a large bowl combine the melted butter, sweetener, vanilla, and salt. Cream until well combined and lighter in color
Add in the eggs and mix again to create a smooth batter.
Stir in the almond flour, coconut flour, and baking powder until incorporated into a cookie dough.
Using a cookie scoop place balls of cookie dough onto a greased baking sheet. Spread to desired size, they will not expand.
Bake for 6-9 minutes, or until the cookies are cooked through and lightly browned on the bottom.
Let cool before moving off the cookie sheet.
You can also decorate them with keto frosting or keto icing, depending on the shape you come up with.As for the holidays, you can make the chocolate one and add a few peppermint extract drops to get into the holiday spirit.