Sugar Crinkles

½ cup shortening

½ cup margarine or butter

½ cup sugar

½ cup brown sugar

1 teaspoon vanilla

1 egg

2 cups all-purpose flour

1 teaspoon cream of tartar

½ teaspoon baking soda

½ teaspoon salt

Cream butter and sugar, add vanilla and egg and mix well.  Add dry ingredients and mix well.  Roll into ball and roll in sugar.  Bake on a greased cookie sheet at 350 for 8-10 minutes.