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 FREE Enfagrow Product at Walgreens Starting 9/30 2 years ago Foodsaver Printable Coupons for Bags and Systems 3 years ago $0.75/1 Ghirardelli Chocolate Coupon 4 years ago $1 off Flipz Coupon 2 years ago Progresso Soup Just $1 This Week! 1 year ago Save A Lot: $15 in Coupon Savings on Procter & Gamble Products 5 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.