I got this recipe from Martha's, I only used half of he ingredients...and still got a lot of brownies, so I hope you enjoy this as much as I do!
http://www.marthastewart.com/recipe/brownie-heart-cupcakes?backto=true&backtourl=/photogallery/valentines-day-treats#slide_2
After you cut the brownies into heart shapes you wonder, what should I do with the scraps? Well...her's what I thought would be the best use for them =) with raspberry ice cream....yum!