I got this recipe from my neighbor Kerri. Not sure where she got it, but the photo copy she gave me had the following introduction to the recipe:
Susie Wingert, from Panama, Iowa, shares this recipe for chewy treats big on taste but needing little effort. “They are handy to make when the weather is hot,” she comments, “since the oven never has to be turned on.”
In a large bowl, combine the first four ingredients; set aside. In a saucepan, bring corn syrup and sugar to a boil, stirring frequently. Remove from the heat; stir in peanut butter and vanilla. Pour over cereal mixture and toss to coat evenly. Spread into a greased 15-in. x 10-in. x 1-in. baking pan. Cool. Cut into 3-in. x 3-in. bars.