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 Edge Shave Gel Printable Coupon + 50¢ CVS Deal 2 years ago Printable Coupons: Lea & Perrins, Sara Lee, Wishbone and More 4 years ago Restaurant.com: $25 Gift Certificate for $5 + Other Restaurant Deals 2 years ago Walgreens: Maxwell House Coffee Only $2.49 2 years ago $2.50 off Bounty and Puffs Coupon 2 years ago RITE AID: Snapple 64 oz Tea Only $1.17! 5 months 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.