2 c. light brown sugar
1 c. white Karo corn syrup
4 tbsp. butter

Put above ingredients in a medium sized pan. Place on stove medium heat. Bring to a boil while stirring with a wooden spoon, but not full boiling. Add (stir in) 2 cups peanut butter. Add (stir in) 6 cups Rice Krispie cereal. Spread in a 13 x 9 x 2 inch buttered pan; let cool. Cut into squares.