Preheat the oven to 350°F and line two baking sheets with parchment.
Whisk together the almond flour, monk fruit blend sweetener, baking soda, salt, and cream of tartar.
In a separate bowl, beat together the coconut oil and butter until creamy.
Beat in the eggs, one at a time, then beat in the vanilla extract.
Add the dry ingredients in a cup at a time, beating well between each addition.
Shape the mixture into small balls then place them on the baking sheets, flattening them slightly by hand. Bake for 15-18 minutes until just browned then cool to room temperature.
Melt the dark chocolate in a double-boiler over low heat and stir smooth.
Dip the tops of the cookies (or half the cookie entirely) in the chocolate and place them back on the cookie sheet until the chocolate cools and hardens.