3/4 cup brown sugar, firmly packed
3/4 cup white corn syrup
3/4 cup crunchy peanut butter
6 cups Rice Krispies cereal

Mix sugar, syrup and peanut butter in a pot and cook over medium heat, stirring continuously, until peanut butter and sugar are melted. Remove from heat and add cereal. Mix well and quickly pour in a 9x13 pan and spread with a spatula. Rub butter on spatula to make spreading easier.