Buttercream Icing

Directions

1. 1
   Cream butter and shortening with mixer.
2. 2
   Add vanilla. Gradually add sugar, one cup at a time, beating well on medium speed.
3. 3
   Scrape bottom and sides of bowl often.
4. 4
   When all the sugar has been mixed in, icing will appear dry.
5. 5
   Add milk and beat at high speed until light and fluffy.
6. 6
   Frosts 3 layers or 9 x 12-inch cake.