Preheat oven to 350 degrees. Line a 9 x 9-inch cookie pan with parchment paper.
With an electric mixer cream butter, cream cheese, vanilla extract and sugar substitute.
Add the eggs one at a time, mix well making between adds
Fold in the almond flour, coconut flour, baking powder, salt, and xanthan gum.
Stir in the chocolate chips.
Pour into 9 x 9 pan and level as well as you can. Bake for 30-45 minutes or until golden on top
Cool completely. Use ends of parchment to pull cookies out, then cut on a flat surface.
Notes
You can also add 1/2 cup of walnuts if you'd like
I am not a health professional and nutrition data is calculated programatically. Accuracy may vary with product selection, calculator accuracy, etc. Consult a professional for the best information.