Preheat oven to 350 degrees.
Lined 2 baking sheets with parchment and set aside.
In a small bowl mix flours, cream of tartar, baking soda and salt. Set aside.
In the bowl of a stand mixer (fitted with paddle attachment), or another larger bowl if you are using a hand mixer. If you want to mix by hand, you can do that too. Add butter and sugars to bowl.
Remember you are only using ⅔ cup white sugar in the dough, the rest will be used to make the cinnamon sugar with. Mix butter and sugars until they are light and fluffy. Scrape sides and bottom.
To this add in the eggs and vanilla. Mix only to combine. Once the egg is added, it is easy to overmix, so be mindful of that. Scrape sides and bottom.
Last is your flour mixture. Mix again only to combine. Scrape sides and bottom and mix again for just a few seconds if needed.
Make cinnamon sugar on a dinner plate. Mix the remaining white sugar and cinnamon on plate.
Scoop cookie dough onto plate. I worked with about 10 balls at a time. Roll in sugar and place on the baking sheet. I like to flatten mine just a touch, as shown in the video.
Place in oven and bake 10-15 minutes depending on how crispy you like your cookies. I like mine really soft, so I always go for the least amount of time.
Remove from oven. These are so good when they are warm, but honestly they are great cooled. I love mine with a cold glass of milk!
Now, sit back and enjoy. You deserve it!