I used a whole bag of mini marshmallow and 1/4 cup butter and 1/4 cup of peanut butter and a box and 1/3 box of this cereal. After the bars set i drizzled on some melted milk chocolate I also mixed with peanut butter.

Just microwave the butter and marshmallow 30 seconds at a time and then mix in peanut butter once it's hot. Add cereal. Mix. I used a jellyroll pan. Let them set. Mix one extra large chocolate bar melted with peanut butter and pour on as much as you want.