Grease an 8 inch square ... and grease that. Microwave chocolate and butterscotch bits with condensed milk for 2 minutes on high ... overnight.) Cut into squares.
Line 8-inch square pan with foil. In small microwave-safe bowl, place peanut butter chips and 2/3 cup sweetened condensed milk. Microwave at high (100%) ... Cover; store in refrigerator.