Brownies with Lime Frosting

Before I go home for the day, I thought I'd share an idea with you: how to glamorize a boxed brownie mix. What happened was that I was going to Cindy's baby shower on Sunday and did not have much time to bake (16 mile training walk, salsa dancing, and all that fun stuff).I know most people like chocolate. So I thought I'd bring brownies, but I wanted to make them a bit more special. I usually add