Preheat oven to 350F. Grease or line a cookie sheet.

Sift together flour, cream of tartar and baking soda and set aside.

In a large bowl, cream butter, sugars and pudding mix together. Add eggs and vanilla and mix well.

Add flour mixture slowly until well incorporated.

To make the cinnamon-sugar, combine sugar and cinnamon in a shallow bowl or plate.

Roll cookies into 1″ balls. Roll each cookie into cinnamon-sugar mixture to coat outer surface of ball entirely. Place on a prepared cookie sheet and repeat for remaining dough.

Bake at 350F for 10-12 minutes.