Recipe Angel Crisps

Ingredients
1/2 cup butter
1/2 cup shortening
1/2 cup brown sugar, packed
1/2 cup white sugar
1 egg
1 teaspoon vanilla extract
2 cups all-purpose flour
1 teaspoon cream of tartar
1 teaspoon baking soda
1/2 teaspoon salt
1/2 cup white sugar for decoration

Directions
Preheat the oven to 425 degrees F (220 degrees C).
In a large bowl, cream together butter, shortening, brown sugar, and 1/2 cup white sugar until smooth. Beat in the egg, and stir in the vanilla. Combine the flour, cream of tartar, baking soda, and salt; beat into the creamed mixture.
Roll dough into 1 inch balls. Dip the top half of the balls into water, then into remaining white sugar. Place sugar side up onto ungreased cookie sheets. Flatten slightly.
Bake for 8 to 10 minutes in preheated oven, or until light brown. Cool on wire racks, and store in an airtight container.