Preheat the oven to 350 F. In a medium bowl, whisk together flour, salt, baking soda, cream of tartar, and ground cinnamon. In a large bowl, combine butter with sugar until fluffy.
Add in egg and vanilla extract, and mix until smooth. Add in the flour mixture, mix until it is fully combined. In a shallow dish, combine granulated sugar and ground cinnamon.
Roll the cookie dough into balls, and flatten each one slightly. Place one chocolate kiss on each cookie. Roll the cookie dough into balls. Roll each cookie into a mixture of cinnamon and sugar.
Place the cookies onto a large ungreased baking sheet at least 2-inches apart. Bake for 10-12 minutes.
