Hi Diane, take a look at my page, Say It With Chocolate -- I offer personalized chocolate bars. You may be able to find a vendor in your area who can print the menu on the reverse side (or front side) of a chocolate bar wrapper chosen either by you or your client. They are just lovely! I've had a few brides use the candy bars as seating cards, so I'm sure a menu would look wonderful on the bar.
Good Luck! Cindy :)