1 cup light Karo syrup
1 cup granulated sugar
1 cup peanut butter
6 cups Rice Krispie cereal
1 cup semi-sweet chocolate chips
1 cup peanut butter chips (see note)
Mix the syrup and granulated sugar in a heavy saucepan, over medium heat (stirring). Bring to a boil and immediately remove from heat; stir in peanut butter until smooth and well mixed.
Pour over Rice Krispie cereal and stir to coat evenly. Press into a lightly greased 11" x 7" pan (see note) and press down evenly with slightly damp hands.
NOTE: The size of the pan is not really important. Just remember that the smaller the pan is, the thicker the treats will be and the bigger the pan is the thinner they will be.