1. Whisk softened butter and 1/2 cup confectioners' sugar until creamy. Add vanilla, sifted flour, salt, and 1/2 teaspoon of cinnamon, whisk.
In a separate bowl, combine a cup of confectionery sugar and 1 teaspoon of cinnamon. Spoon the dough into 1-inch balls. Dip in the sugar mixture and place on a baking sheet.
Bake in an oven preheated to 350F for 15-20 minutes. Cool on a wire rack.