Preheat your oven to 375 and prep a cookie sheet for nonstick.
In a small bowl, use a fork to mix together the cinnamon with ¼ cup of the sugar alternative then set this bowl aside.
Now, in a medium bowl, whisk or sift together your flour, cream of tarter, baking soda, and salt. Set this bowl aside for a moment while you continue to work
Next in a mixing bowl, cream together 1 ½ cups of the sugar alternative with the butter, and shortening.
For the next step we will add the dry ingredients from the first bowl to the creamed ingredients in the mixing bowl. To do this simply add half of the dry ingredients, gently mix, and then add the remaining and the gently mix again.Now we will add the eggs, one egg at a time, and then the vanilla extract to the mixing bowl.
To form the cookies, simply roll each individual cookie into a ball and then roll that ball into the first bowl (small bowl with the cinnamon and sugar alternative) to cover the cookie. Then place the rolled cookie on to the prepped cookie sheet and repeat until all of the cookies have been formed. Be sure to leave plenty of room between cookies on the sheet as they will flatten as they bake.
Bake your cookies for 10-12 minutes or until they begin to 'crack'. Allow them to cool on the sheet before transferring.