I will warn you though, this is quite sweet! You'll want a glass of milk to wash it down! This frosting is similar to the kind you would find on store-bought cakes. VERY sweet...something I save for special occasions.
To begin, start with 1 cup (2 sticks) room temperature butter.
Beat it until fluffy. Next beat in 4 cups of sifted powdered sugar..
1/2 cup Milk
And 2 teaspoons Vanilla.
Beat this until smooth, and then begin adding more sifted powdered sugar 1/2 cup at a time, until you reach your desired consistency.
Then simply spread it on your cake or cupcakes. You can add food coloring to this as well, if you are after the colorful look. Just add a few drops when you add the milk.
Here's a quick tip: If you have problems with crumbs getting in your frosting, you can do one of two things.
1) Freeze the cake before frosting.
Or 2) Put a thin layer of frosting on the cake, to "encase" the crumbs. Chill it in the fridge to set the frosting - about 30 minutes. Then go ahead and frost as normal. Keep the frosting on the kitchen counter, covered with plastic wrap. It will remain soft, so you can spread it on after a short break.
I like to texturize the top of the cake. I think the little swirls and spikes are fun.
Printable Version: Buttery Sweet Frosting