Gluten-Free Chocolate Chip Cookies

I decided to post this recipe 'cause it's so good! Makes about 3 dozen.

1 cup unsalted butter, softened
2 eggs, lightly beaten
2 Tbsp. vanilla extract
1/2 cup each of brown sugar, granulated sugar, chopped nuts (I used walnuts, yum!)
1 12oz. package semisweet chocolate chips
1 cup each of rice flour, tapioca flour
1 tsp. each of baking powder, baking soda. xanthan gum
1/2 tsp. each of salt, cream of tartar

Preheat oven to 375. Line baking sheets with parchment or freezer paper.
Cream butter and sugars. Add eggs and mix. Add vanilla, chocolate chips, and nuts, and mix.
In separate bowl, combine flours, baking soda, baking powder, cream of tartar, xanthan gum, and salt.
Add dry ingredients to wet ingredients. Stir just until mixed.
Place tsp. size spoonfuls on baking sheets 2 inches apart (these spread a lot).
Bake 10-12 minutes until browned. Cool on racks or wax paper.