Sugar Cookies

1/2 cup butter
1/2 cup shortening
1 cup sugar
1 egg
1 tsp. vanilla extract
2 1/4 cups flour
1/2 tsp baking powder
1/2 tsp baking soda
Additional sugar

1. In a mixing bowl, cream butter, shortening and sugar. Add egg and vanilla; mix well. Combine flour, baking powder and baking soda; gradually add to the creamed mixture. Shape into 1-in. balls. Roll in sugar. place on greased baking sheet; flatten with a glass. Bake at 350 degrees F for 10-12 minutes.