Yield: 5 dozen
Heat oven to 400 degrees. Mix 1-1/2 cups sugar, the butter, shortening and eggs in large bowl. Stir in flour, cream of tartar, baking soda and salt.
Shape dough by rounded teaspoonfuls into balls. Mix 3 tablespoons sugar and the cinnamon; roll balls in mixture. Place about 2 inches apart on ungreased cookie sheet.
Bake 8-10 minutes or until set. Immediately remove from cookie sheet. Cool completely on wire rack.
Please note that some ingredients and brands may not be available in every store.