1 c. sugar
1 c. butter
1 egg
1 tsp. vanilla
2 1/2 c. flour
1 tsp. cream of tartar
1 tsp. baking soda

Cream sugar, butter, egg and vanilla. Sift flour, cream of tartar and soda together. Add to creamed mixture gradually. Pinch off and form into walnut size balls. Roll balls in additional sugar. Place on greased cookie sheet and flatten. Bake 350 degrees for 10-15 minutes.