i know they have said it a million times but i never thought to write it down....

http://tipnut.com/monkey-munch-recipe/

its just puppy chow. i dont know why they call it monkey munch but buy a box of chex and youll see the recipe...

Its a regional thing. I know a family from Ohio that calls it Monkey Munch, and when I brought Puppy Chow along with us when I went on vacation with them they were like "What's that?" Then I told them and they said they didn't call it that.
I've also seen it called "Muddy Buddies."

9 cups Chex cereal (any kind)
1 cup semi-sweet chocolate chips, melted (6oz.)
1/2 cup smooth peanut butter, melted
1/4 cup butter, melted
1-2 teaspoon vanilla
1 1/2 cups powdered sugar
Directions
1 Measure cereal in large bowl.
2 Set aside.
3 Microwave chocolate chips, peanut butter and butter for 1 minute on high.
4 Stir.
5 Cook for 30 seconds longer or until smooth.
6 Add vanilla.
7 Pour mixture over cereal, stirring until coated.
8 Pour mixture into large Ziploc bag and add powdered sugar.
9Shake until well coated.
10Spread on waxed paper to cool.
11Store in Ziploc bags or large sealed bowl.