Betty Crocker Frosted Brownie Mix, a bag of mini marshmallows, and a pkg of graham crackers crushed.
Make the brownies by following the directions on the box then stir in half of the crushed graham crackers and bake for 20 minutes at 350 degrees. Sprinkle 3 -4 cups of the marshmallows on the hot brownies and bake another 10 minutes or until the marshmallows are golden brown. As soon as you take them out of the oven, sprinkle the remaining graham crackers on top. Heat the frosting in a microwaveable safe dish for 20 - 30 seconds and then drizzle it over the top. Let cool completely.
This is what you end up with:
Just a sidenote - I took these babies to a good friend that I Visiting Teach and they fought over the last one! The mom told me she of course won the fight and ate it with a big glass of milk in the cover of darkness so she wouldn't have to share with anyone!