Preheat oven to 375F and line baking sheet with parchment paper.

In a medium bowl, mix together flour, cream of tartar, baking soda, cinnamon, and salt.

In a large bowl, use a hand mixer to blend together butter and sugar. Add in two eggs and vanilla and beat until creamy.

Slowly add in flour mixture and mix until totally combined.

Mix together sugar and cinnamon in a small bowl.

Use a small cookie scoop or 1.5 tbsp dough to roll into balls. Then roll dough in cinnamon sugar mixture.

Place on baking sheet and bake for 10-12 minutes. Let cool 5 minutes before moving to a cooling rack.

Store in airtight container.