Homemade Buttercream Frosting

This is the recipe that my mother always used whenever she made cookies or cakes that called for frosting.  It is a perfect, all purpose frosting that can make anything, from a simple sugar cookie, to the most elaborate cake look and taste amazing!  

Homemade Buttercream Icing (Yield 2-3 cups)

1 stick of butter (softened)

1/2 cup of shortening

3-4 cups of confectionery sugar

1 tsp vanilla

2-4 tbsp of milk

Blend the shortening and the butter together until smooth.  Add the vanilla and mix until combined.  Add the confectionery sugar, one cup at a time, scraping the sides of the bowl with each addition.  Gradually add milk to the mixture until you reach your desired consistency.  Use immediately or store in an airtight container in the refrigerator for up to one week.