Top each cookie with additional graham cracker pieces and marshmallows. (deliciouslyyum.com)
Remove from the oven then break the remaining graham cracker pieces up on top. (makingthymeforhealth.com)
I do not add cheese or nuts due to calorie counts, but occasionally add crushed / pulsed pretzel or cracker pieces for some texture / bulk. (oneingredientchef.com)