In a large bowl cream together 1/2 butter and 1/2 vegetable shortening (about 1 min)
2nd
After you finish step one add in the 1Tsp clear vanilla extract. (Mix for about 30 sec.)
3rd
Slowly add in the 4 cups of powdered confectioners sugar. (About half a cup at a time) Scrape bowel each time you add more sugar.
4th
Yes your mix will look clumpy. keep mixing!!!
5th
After all of the confectioners sugar is added, add 1 Tbs of milk at a time to frosting, until you have reached desired consistency. (I use 3Tbs)
6th
Add desired food coloring, or leave as is.
7th
Any left overs, place in air tight container, good for up to 2 weeks in the refrigerator.
Enjoy!!!!