We had Peeps S'mores for Easter and, of course, the rats had to share.
Disclaimer - S'mores are NOT healthy, but this is a treat. Also, chocolate is not poison for rats. Indeed, chocolate can be therapeutic.
It's 2 squares of graham cracker, some chocolate, and a yellow peep. Baked at 350 deg Fahrenheit for about 5 minutes. For the rats, I made sure it cooled a tad so none of my guys would get burnt tongues.