They use to serve these tasty little treats for school lunch. They are easy to make, but sometimes finding the plain puffed rice cereal can be a challenge. I always get mine at Macey's in Spanish Fork.
1 cup sugar
1 cup Karo syrup (corn syrup)
1 cup peanut butter
6-7 cups puffed rice cereal (NOT SUGAR SMACKS!)
Bring the sugar and Karo to a boil in a saucepan. Boil for 2-3 minutes. Remove from heat and stir in peanut butter. Stir in puffed rice cereal a little at a time until it is all mixed and incorporated. Press into a pan. Cool, cut in squares.