In a small bowl, whisk together the coconut flour, xanthan gum, baking soda, and salt. In a separate bowl, whisk together the butter or coconut oil, egg whites, and vanilla. Stir in the Stevia Powder, Truvia, and Swerve. Mix in the milk. Add in the coconut flour mixture, stirring until just incorporated. Fold in the dark chocolate chips and 1 tablespoon of miniature chocolate chips. Let the cookie dough rest for 10 minutes.