Devil's Food Cake and Pasty Frosting

I used the standard recipe from the Betty Crocker Bridal Edition cookbook. So to avoid plagiarism, go look it up yourself. Con wanted to make chocolate cake, and it was the first recipe I found in my stack of books.

For frosting, I used this crazy recipe I found online.
5 tablespoons flour (AP white)
1 cup skim milk
1 teaspoon vanilla
1 cup butter
1 cup granulated sugar

Seemed like you almost start out making a roux, put the flour in a sauce pan and slowly add milk. Stir with a whisk, adding the milk a few tablespoons at a time to avoid the lumps. Continue to whisk (I was having a shit day, so I forcefully whisked) until it thickens. It becomes very thick. I continued to heat and whisk a bit, even after it was thick, to cook out the paste taste. Allow to cool.

After it has cooled, whisk in the vanilla. Add this mixture to a creamed butter and sugar.



OK. So, I am not sure what to think about this. The cake was fab, the frosting was a bit runny, and tasted pasty, and needs salt. I actually sprinkled a bit of Kosher salt on the top. I love my salt though. Con liked it