1/2 c. shortening
1/2 c. butter
1 tsp. clear vanilla extract
4 c. sifted confectioners sugar (approximately 1 lb.)
2 tbsp. milk

Cream butter and shortening with mixer. Add vanilla. Gradually add sugar 1 cup at a time, beating well on medium speed. Scrape sides and bottom of bowl often. When all sugar has been mixed in, icing will appear dry. Add milk a teaspoon at a time, mixing at medium speed until light and fluffy. Can be stored in covered container in refrigerator 2 weeks. Re-whip before using.

Makes 3 cups.