The recipe is easy and fun. Take a graham cracker, set a Peep on it, put a couple of Hershey's Kisses™ on another cracker, pop them in the microwave, and nuke them until the Peep has expanded so it looks like it's ready to explode (20 seconds seems good). Smush the Peep side and the Kiss side together, and enjoy!
Peeps are marshmallows, which are puffed table sugar. The sugar traps the expanding air you get when you heat the marshmallow. Table sugar is purified sucrose. Sucrose, like other sugars, is composed of hydrogen, carbon, and oxygen. Here's a bit more about sugar for you, to read for the 20 seconds it will take you to nuke a s'more and unwrap Kisses for another one:
- Close-Up of Sugar Crystals - See the pretty monoclinic shape?
- Make Fake Glass - If you heat sugar, you can make hard candy out of it. If you spread the hard candy onto a cookie sheet, you can make stage 'glass'.
- Grow Sugar Crystals - Rock candy is made from sugar crystals. These crystals are fairly easy to grow, plus you can eat the finished product.
- Experiments on Peeps - Neat website I found while looking for a photo.