1 lb. confectioners' sugar, sifted
1/2 c. shortening
1 tbsp. vanilla
1/4 tsp. butter flavor
1/2 tsp. salt
5 tbsp. milk (approx.)

Sift confectioners' sugar. Blend well about 1/2 the sugar with shortening, flavors and salt. Alternately add rest of sugar and enough milk to get a smooth spreading icing.