2 sticks butter
1 c. sugar
1 egg (beaten)
2 tsp. vanilla
2 c. flour
1/2 tsp. baking soda
1/2 tsp. cream of tartar
1/4 tsp. salt

Cream shortening, add sugar, eggs and vanilla. Mix until light and creamy. Sift flour, add soda and cream of tartar. Mix well and chill dough. Roll into small balls and flatten with palm of hand. Put on greased pan and bake at 325 degrees for 8 to 10 minutes.