Serious Eats: Recipes
Fluffernutter S'mores
While I used 1 cup of chocolate chips and 1 cup of peanut butter chips, you can adjust the ratio depending on your preference.
From Cookie Madness
Note for Salt Fiends: Substituting some of the chocolate chips with peanut butter chips increases the saltiness of the treat and tones down some of the sweetness of the cereal.