The BEST Frosting You'll Ever Have!

Trust me, this is a good one! Don't be skeptical!!

Ingredients
5 Tbls Flour
1 cup Milk
1 tsp vanilla
1 cup white sugar
1 cup butter

(I know what you're thinking, flour? In Frosting!?)

Directions

1. Pour 1 cup of milk in to saucepan; add 5 Tbls flour and whisk to combine. Place over medium heat, whisking as the mixture thickens. Remove from heat when mixture resembles wallpaper paste. (that's very thick, if you've never wall-papered before)
2. COOL THE MIXTURE COMPLETELY (this is a very important step, in case you couldn't tell by the caps lock)
3. Add 1 tsp vanilla to the wall-paper paste flour mixture.
4. Place 1 cup of butter (at room temp) in bowl of mixer. Beat slightly. Add 1 cup sugar and whip until light and fluffy. 
5. Add the cooled wall-paper paste flour mixture and whip until consistency of whip cream. (I did this on speed 5 for 20 seconds, scraped down the sides and then beat on speed 7 for about 45 seconds)
6. Refrigerate 1 hour and spread on the delicious cupcakes (recipe below)