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Chocolate Chip Cookie Dough UPC 7 43659 12910 3, all best buy dates on or before 01/20/10
Double Fudge Brownie UPC 7 43659 129030 1, best by 11/9/09
Cookies ‘n Cream UPC 7 43659 12920 2, best by dates 11/12/09 or 11/22/09
more listed here
its been reported that most cvs stores are accepting returns of these bars without receipts for gift cards. personally, i wouldn't return something to cvs that was free after extrabucks to begin with, but i leave you to use your own judgement.
another option is a refund directly from promax. no receipts are needed for this either, just the "best by" dates from the packaging.
PROMAX CUSTOMER REFUND FORM: JAN ’09 VOLUNTARY WITHDRAWAL OF SELECT PROMAX PRODUCTS