Line a 9 x 13 pan with club crackers (not crushed).
Simmer together brown sugar, white sugar, margarine, milk and graham crackers for 5 minutes. Pour over the club cracker layer and top with another of club crackers.
Melt over low heat peanut butter, chocolate chips and butterscotch chips. Pour over top and spread. Cool and cut into squares. Keep refrigerated.
Instead of covering in chips, melt 1 T. butter and add 1 c. powdered sugar, 2 T. cocoa and enough milk to get the correct consistency. If too much milk is added, put in more powdered sugar.