1/2 c. solid vegetable shortening
1/2 c. butter (softened)
1 tsp. vanilla
4 c. sifted powdered sugar (1 box)
2 tbsp. milk

Cream butter and shortening with electric mixer. Add vanilla. Gradually add sugar, one cup at a time, beating well on medium speed. Scrape sides and bottom of bowl often. When all the sugar has been mixed in, icing will appear dry. Add milk and beat at high speed until you are ready to decorate. For best results, keep icing in refrigerator when not using it. Makes 3 cups.

NOTE: To use the above recipe to ice a cake smooth, add 2 extra tablespoons of milk.

Also, double your recipe to be sure you have enough to complete your project.