For the cookies that are single, you'll need 2 of each cookie. Carefully remove your toasted marshmallow from the roasting stick and place in between the 2 cookies. These cookie s'mores are quite a mouthful, with extra gooeyness. Keep a napkin handy!
For cookie sandwiches, we opened up one cookie and placed the toasted marshmallow inside, then closed him back up. My kids loved having a bit of each Keebler elf, Ernie, Elwood, and Fast Eddie. These were their favorite s'mores to make. With the thin layer of chocolate on each cookie, it's the perfect combination of cookie, chocolate, and marshmallow.