If you've never tried them, pick them up next time you're shopping because they bake up like magic. They come frozen so you need to leave them out overnight to thaw, but as they thaw, they double in size. Here's a before and after photo.
Just look at those layers of flaky crust. I like to eat them right out of the oven when they're hot and the chocolate is just melting out the sides, but how fun would it be to give these out as gifts at the end of a dinner party? I'd wrap them individually in parchment paper and send each guest home with instructions on how to bake them the next morning. Best party favor ever!