Created on November 22nd, 2004
Combine popcorn, cereal, and M&M's in a large greased mixing bowl; set aside.
Grease a jelly roll pan.
In a large saucepan over medium heat, combine sugar, syrup, peanut butter, and margarine. Bring to a boil and boil 2 minutes, stirring constantly.
Immediately remove from heat and pour over popcorn mixture, mixing and tossing until thoroughly coated.
Quickly spoon and lightly press mixture into pan. Cool about 1 hour. Cut into bars.