Sugar Cookies

¾ c. butter
¾ c. shortening
1 ½ c. sugar
4 eggs
5 ¼ c. flour
1 ½ tsp. baking soda
3 tsp. cream of tartar
2 ¼ tsp. vanilla

Cream together butter, shortening, and sugar. Add eggs and blend well. Add flour mixture gradually to cream mixture and mix together. Add vanilla. Chill dough for a couple hours. Bake on ungreased cookie sheet at 350 for 7-10 minutes.

Frosting:
½ cube margarine
Milk
Powdered sugar
Vanilla