I saw these today and just had to try them. If you want to try some yourself, check out how it's done at http://creativeholidaygiftideas.blogspot.com/2008/03/easter-bunny-smores.html.
Cracker crumbs with brown sugar
Cracker crumb/brown sugar mixture in a bag
Bunny Peeps looking out
Instructions for baking
See the many pretty colors!
And I had to bake up a batch, too! (Next time I will try them by cutting up the peeps and making sure I really press the mixture into the pan.)