Prepare. Prepare your pan for nonstick. Parchment paper works well. Also, place your cereal in a large mixing bowl.
Stovetop. In a medium saucepan on medium-high heat, melt together the corn syrup and sugar, stirring constantly.
Peanut Butter. Once the ingredients from the last step have melted, remove the saucepan from the heat and carefully whisk in the peanut butter. Once combined, fold these ingredients into the Rice Krispies, that are in the large bowl, until the cereal is well coated.
Transfer. Transfer the ingredients from the mixing bowl to your prepared baking dish. Then use a rubber spatula or similar item to press the mixture into the the dish.
Topping. In a microwave-safe bowl, heat the chocolate chips and the butterscotch chips in 30 second increments, carefully stopping to stir between increments, until melted. This step can also be done on the stovetop using the double-boiler method. Pour the melted ingredients over the cereal mixture and use the backside of a spoon or similar item to spread to smooth the melted ingredients out, covering all of the cereal bars.
Serve. Allow the bars to fully set before slicing.