Preheat your oven to 375 degrees. Place a sheet of parchment paper on your cookie sheet or grease with vegetable spray. Cream the butter, sugar, eggs, cream of tartar, baking soda, salt, and vanilla. Add the flour and mix thoroughly. I use a cookie scoop to make the cookie balls about 1-inch in diameter. Roll the cookie balls in the cinnamon-sugar mixture. Bake for 10 minutes. Do not over-bake.