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 WALMART: Xtra Laundry Detergent Only 3¢ per Load! 1 year ago New Mambo Sprouts Coupons = Free Luna Bars 6 years ago Coupons: DG, Enfamil, Gerber, Schick Hydro Silk, and Persil 7 months ago Get 20% Back on Fresh Plums! 2 years ago *HOT* Free Juice Juice Coupon When you Buy Huggies 5 years ago Buddy Fruits Coupon Available Again | Makes Then 68¢ at Walmart 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.