My sister and I would BEG to make this as kids. We loved it. Mainly because we just wanted to eat it on its own. It sure makes a boring cake delicious. I made some cupcakes to snack on after a little charity mud run thing I did a few weeks ago, but after all that baking, NO ICING SUGAR! And too little too late, I didn't even think about this recipe! No cupcakes for anyone (in fact, I threw most of them away). This icing recipe is from my mom who got it from somewhere, who knows, but when I googled it, a blog my Aunt contributes to came up, so it must be in the family :) Here is the recipe.
You can leave it at room temperature, and it will be very smooth & spreadable, or if you chill it too long like me, you can spoon it out, and it will look like this glob. But, I kinda like this blob, after seeing so many perfectly decorated cupcakes, this is a fun change.