Grease an 8-inch-square pan
Combine chocolate chips, brown sugar, peanut butter, corn syrup, and butter in a microwave-safe bowl. Microwave 2 to 3 minutes, until melted, stirring every 30 seconds. Stir in nuts and cereal. Press into pan.
Topping: Microwave peanut butter and chocolate chips on medium 2 to 4 minutes, until melted, stirring every 30 seconds. Pour over bars; spread evenly.
Refrigerate several hours to set.
Recipe submitted by Joyce on 10/2/00