Preheat oven to 350°F and line a baking sheet with parchment paper.
In a bowl, mix almond flour, coconut flour, baking soda, and salt.
In another bowl, beat softened butter with sweetener until creamy.
Add eggs and vanilla extract to the butter mixture and blend well.
Slowly add the dry ingredients into the wet mixture until dough forms.
Fold in sugar-free chocolate chips.
Scoop dough into large rounds and place on baking sheet.
Bake for 12-14 minutes until edges are golden but centers still soft.
Let cool on the sheet before moving to a rack—if you can wait!