DirectionsHeat oven to 400F 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 into 1 1/4-inch balls.
Mix 1/4 cup sugar and the cinnamon.
Roll balls in cinnamon-sugar mixture.
Place 2 inches apart on ungreased cookie sheet.
Bake 8 to 10 minutes or until set.