Chocolate-on-the-Outside Peanut Butter S'mores
Use bittersweet thin chocolate cookies (such as Nabisco's "Famous Chocolate Wafers") instead of graham crackers, and pile on toasted marshmallows and a layer of peanut butter in the middle.
Deluxe Peanut Butter Cookie S'more
Bake peanut butter cookies ahead of time. Layer toasted marshmallow, peanut butter, banana, and some chocolate peanut butter or chocolate hazelnut spread inside for a decadent gourmet s'more.
Peanut Butter Cup S'more
Try swapping a plain old Hershey's chocolate bar with a different candy, like a Reese's cup, or for maximum peanutty crunch, a Mr. Goodbar.
Fruit and Peanut Butter S'mores
Forget the top graham cracker layer and make open-face s'mores to accommodate more toppings. Start with a thin layer of peanut butter and then build on it with marshmallow, chocolate, and slices of apple, strawberry, or peach on top. Try using semisweet or dark (at least 65% cacao) chocolate, which will complement both the peanut butter and sweet fruit.
Or you can skip the campfire altogether. Use chocolate graham crackers, peanut butter, and Marshmallow Fluff to make indoor s'mores that are just as tasty as their campfire counterparts!