This post goes out to my friend Jenn, who happens to have a serious addiction to all things peanut butter. In particular, desserts that involve both peanut butter and chocolate. So, since tonight was a baking night for an upcoming birthday cake, I figured I’d throw some cupcakes in the oven and top them with a yummy peanut butter buttercream. Since I was already at it, I also topped a few of them with classic vanilla buttercream.