Preheat oven to 350 degrees Fahrenheit. In the bowl of an electric mixer, cream together butter, white sugar, brown sugar, vanilla and eggs. In a separate bowl, stir together baking soda, baking powder, cream of tartar, salt, cinnamon and flour. Add it to the wet mixture and mix until incorporated. Stir in chopped pecans, if desired. In a small bowl stir together 2 Tbsp. sugar and 1 tsp. cinnamon for rolling.

Make 1 1/2" dough balls with a cookie scoop or by hand. Roll in cinnamon/sugar mixture and place at least 2" apart on a baking mat lined cookie sheet or one that's been coated with nonstick cooking spray. Bake for approximately 7-8 minutes. Don't overbake or they wont' be soft! If you'd like, right out of the oven, press white chocolate chips or cinnamon chips into the tops of the cookies. Let cool on cookie sheet for a few minutes, then remove to a cooling rack. Enjoy!