This might be the first thing I ever pinned & did from Pinterest - and we LOVED it last year, so we did it again this year. The original pin was from here (and her pictures are much better than mine!)
Get some chocolate bars (I use dark chocolate because it's yummy), graham crackers, and peeps of your choice. Put half a graham cracker on a plate (I make 4 at once), top it with a square of chocolate, and a peep.
Stick them in the microwave for 15-30 seconds. Your kids may want to watch...the peeps blow up really big (don't over cook, the graham crackers will scorch.)
Then you just plop the other half of the graham cracker on there, and enjoy.
You should do this, it's a fun Spring/Easter treat.
Unless of course, they're OCD like our youngest. In which case, they'll get marshmallow on their hands, freak out, and be so obsessed with getting it off they won't eat a bite.