SmashburgerYou missed this coupon but I’ve got more Coupons for you to save with. I love this coupon for free Smashburger Side with any Entree purchase when you smash burgers. Just scroll down until you see the Burger Smasher game. You’ll have until September 30 to use your coupon before it expires. My favorite side is Veggie Frites. What’s your favorite side at Smashburger?