1 c. butter
1 1/2 c. powdered sugar
1 egg
1 tsp. vanilla
2 1/2 c. flour
1 tsp. baking soda
1 tsp. cream of tartar
1/4 tsp. salt

Mix in the order given. Chill 1 hour. Roll out and cut into desired shapes. Bake at 375 degrees for 10 minutes.