Smashburger Coupon for Buy One Entree Get One Free 3 years ago 2 Comments Coupons, Restaurant Deals Smashburger has a great offer right now. 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 NEW SavingStar Offers: Dial, Purex, Truvia, and More! 2 years ago Two New Transformers Toy Coupons |Save $7! 2 years ago *NEW* Lalaloopsy Coupon! 2 years ago $10 Off Nicorette Gum or Lozenges! 2 years ago New Buy One NESTLÉ® Valentine Heart Get One Free Printable Coupon + Walgreens and CVS Deals 3 years ago Heinz Ketchup Printable Coupons = $1.98 at Walmart 3 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.