Cook sugar and corn syrup in a medium saucepan until dissolved. Remove from heat. Stir in peanut butter until smooth. Stir in rice krispies. Press into a 9x13 pan lined with wax paper. Melt chocolate chips and spread on top.
Variations: I learned from Leonard that marshmallows are really just sugar and corn syrup. So when you run out of corn syrup, just use 3 c. mini marshmallows and 2 T butter instead of the corn syrup and sugar. Also, you could mix some butterscotch chips in the topping as well.
(1) Mon Jun 25 2007 08:52 Chocolate-Frosted Peanut Butter Rice Krispie Bars:
Lately I have become obsessed with these. Yum.
1 c. sugar
1 c. corn syrup
1 c. peanut butter
6 c. rice krispies
1 c. chocolate chips