Smashburger Coupon for Buy One Entree Get One Free 2 years ago 2 Comments Coupons, Restaurant Deals Smashburger has a great offer right now.Â Buy one Eentree get another one free with this printable coupon. Offer valid through 3/31/13. Find the Smashburger closest to you here. Facebook Prev Article Next Article You may also like Printable Coupons: Ronzoni Pasta, Dove, Wholly Guacamole and More 5 years ago Printable Coupons: Butterball, L’Oreal Paris, Oxi Clean + More! 4 years ago Printable Coupons: Rice Dream and Ponds 6 years ago FREE $5 Target Gift Card When You Buy $20 Worth of Easter Goodies! 1 year ago FREE Coupon for FREE Trial Size of the NEW Herbal Essences â€śHoney, Iâ€™m Strongâ€ť Shampoo or Conditioner 3 years ago Tuesday Freebies: Free Haagen Dazs, Sams Club Pass and More 6 years ago Sandy P Thanks for the coupon, I have never tried this place… a must for this weekend!! Lindsay Ackerman Guess they need to update their restaurant finder; there are at least 3 in my city and the ZIP code search is telling me my closest is St. Louis.