School Rice Krispie Squares
["1 stick margarine", "1 c. sugar", "1 1/2 c. Karo", "1 1/2 c. crunchy peanut butter", "1 (10 oz.) box Rice Krispies cereal"]
["Warm first 4 ingredients until hot and bubbly.", "Mix in cereal. Pour in a 13 x 9-inch pan.", "Press to cover.", "Cut into squares when cool."]
["margarine", "sugar", "crunchy peanut butter", "cereal"]