Cereal S'mores Bars

My 9 year old son went to a day camp a couple of weeks ago and now he wants to cook all the time. Today he made snacks for the kids. These were really good!

Cereal S'mores Bars
3 cups Cocoa Puffs Cereal
3 cups Golden Grahams cereal
1 cup peanuts
1/2 cup peanut butter
1 (10.5 oz) bag mini marshmallows
2 tablespoons skim milk
Spray bottom and sides of 9x13 pan with cooking spray. In a large bowl, mix both cereals and peanuts. In a 3 quart saucepan, heat peanut butter, marshmallows, and milk over low heat, stirring occasionally, until peanut butter and marshmallows are melted and mixture is smooth. Pour the peanut butter mixture over the cereal mixture, stir to coat cereal well. Press mixture in greased pan. Cool at least 30 minutes before serving. Cut into bars.
Makes 24 bars
Per bar: 140 calories, 6g fat, 1g fiber