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 Dial Complete Foaming Hand Soap Coupons + Target Deal 3 years ago RITE AID: Haribo Gummy Bears Only 20¢ Each! 8 months ago Buddy Fruits Coupon Available Again | Makes Then 68¢ at Walmart 4 years ago Printable Coupons: Breyers Ice Cream , Ragu Pasta Sauce and More 4 years ago Heinz Ketchup Printable Coupons = $1.98 at Walmart 2 years ago Walgreens: New Nestle Drumstick Register Reward Deal 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.