Hey Cyn, I made them before the 4th, and loved them!
I was intrigued by make-ahead s'mores, and I happened to have graham crackers one day, so I made a few in my toaster oven.
It's pretty gooey when you try to take them apart, but I did, and I wrapped them in saran wrap. Then I ate one (or two) a day for three days.
I was surprised that the cracker remained slightly crunchy on day three, and chocolate was still kinda melty. The marshmallow firmed up, but it was a nice chewy consistency.
Would love to make these for a bake sale!!!
If you're planning to make these a lot, check the price of graham crackers at Costco. I could be mistaken, but I thought they had 4 boxes for about $8.00. (The boxes are 2/$7.00 on sale at my local Safeway!)
Loved it!