Cream butter and sugar until combined. Add and mix 1 egg at a time. Add cream of tartar, baking soda, vanilla extract, and cinnamon. Mix for 1 to 2 minutes until well combined.
Add flour in 2 cup increments mixing only until incorporated. Dough should come together and pull from sides of the bowl as it mixes. Dough should not stick to your finger when you touch it.
I roll between parchment or wax paper so as to not incorporate more flour which allows you to re roll the scraps. I use a Joseph Joseph rolling pin and roll them 1/4 in thick.
Bake at 375 F for 10-12 mins. Bake only until the edges are set and the centers are slightly soft. This will keep the cookie chewy.

My Cinnamon Sugar Topping:

1/2 cup granulated sugar
2 tbsp ground cinnamon

Mix together until well combined. Sprinkle on top of cookies before baking.

My Icing:

1- 2lb bag powdered sugar
3 heaping tablespoons of Wilton’s meringue powder
1 tablespoon vanilla
9+ tablespoons of water

Mix only until combined and smooth. Do not over mix. Add more water to achieve desired consistency.