Smashburger Coupon for Buy One Entree Get One Free 2 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 Hungry Jack Pancake Mix Printable Coupons 3 years ago Printable Coupons: 1 year ago $1 Off Boudreaux’s Butt Paste Coupon! 9 months ago Lots of New Fisher Price Toy Coupons | Save $19! 9 months ago Eclipse or Orbit Gum Printable Coupons for Buy One Get One Free 3 years ago New $1/1 Tone Body Wash Coupon 2 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.