1 c. sugar
1 c. white corn syrup
1 1/2 c. peanut butter
2 tsp. vanilla
4 c. Rice Krispies cereal
6 oz. chocolate chips

Heat sugar and corn syrup to full rolling boil and remove from heat. Add peanut butter and vanilla. Stir until smooth. Stir in cereal. Spread in greased cake pan. Melt chips and frost bars.