These cookies started out being non-gluten free, back when I could eat gluten, but since then I have converted the recipe to gluten-free, though it can easily be made with all-purpose flour and without the Xanthan gum needed for gluten-free baking. I use a base cookie recipe and just add or change spices, chocolate chips, or white chips or however I want and I have a new cookie...that's why I love this recipe so much!
Combine flour, baking soda, salt, Xanthan gum, and pumpkin pie spice in a small bowl; whisk together and set aside. (If making this non-gluten-free, use 2 1/4 cup of all-purpose flour instead of GF flour and leave out the Xanthan gum.)
Beat butter, sugar, brown sugar, and vanilla until fluffy and creamy. Add eggs, one at a time, beating well after each addition. Gradually beat in the dry ingredients until well blended.
Fold in white chips and nuts(if desired) and refrigerate overnight. (You can bake them immediately, but the refrigeration time really allows the flavors to mingle.)
Before baking, let the dough come to room temperature. Preheat oven to 375°.
These cookies can be made either as bar cookies or drop cookies. If making drop cookies, drop by rounded teaspoon onto parchment lined baking sheets. Bake 9 to 11 minutes or until golden brown. If making bar cookies, spray an 8" square pan with non-stick cooking spray. Bake for 20 to 25 minutes or until golden brown.