Sugar Cookies - cooking recipe

Ingredients

1 c. butter or margarine, softened
1 c. sugar
1 beaten egg
2 c. sifted all-purpose flour
1/2 tsp. baking soda
1/2 tsp. cream of tartar
1/4 tsp. salt
1 tsp. vanilla
colored sugar (for the top)

Preparation

Cream butter and 1 cup sugar until fluffy.
Mix in egg and vanilla.
Sift together cream of tartar, flour, baking soda and salt.
Blend into creamed mixture; mix well.
Shape dough into small balls about the size of a nickel.