Thin and crispier Chocolate Chip Cookies

3/4 cup brown rice or garbanzo/fava bean flour
1/2 cup tapioca starch
1/4 cup potato starch
1/2 tsp baking soda
1 tsp xanthan gum
1/4 tsp salt
1/4 cup butter
3/4 cup brown sugar
5 tbsp sugar
2 tsp vanilla
1 extra large egg
1 cup chocolate chips
1/4 cup chopped nuts (opt.)

Preheat oven to 350 degrees. Mix together flours, baking soda, xanthan gum, and salt. Set aside. Grease a cookie sheet (or use parchment paper).
In a large mixing bowl, beat butter (room temperature, not melted) with brown sugar, sugar, vanilla, and egg, scraping sides of bowl frequently. Beat in flour mixture on low speed, mixing thoroughly.
Stir in chocolate chips and nuts. Drop by tbsps on cookie sheet. Bake 10-12 minutes on center rack of oven or until lightly browned. Cool 2-3 minutes before removing from cookie sheet. Makes 2 dozen.
(Per cookie) Cal=120, Fat=5g, Fiber<1g