Burger 21
Burger 21 is bringing back its limited-edition Super Cheesy burger to participating locations for one day only on Sept. 21.
BurgerFi
Visit your local BurgerFi and buy one cheeseburger to get a second cheeseburger for just $1. Scroll their website and mention or show the offer to redeem it. It’s not available online, in-app, or on third-party orders.
Burger Libre
“Come join us this Wednesday for #NationalCheeseburgeryDay with $3 Classicos all day,” writes Burger Libre’s Twitter account. “Yep, that’s $3 CLASSICOS all DAY Wednesday.”
Burger King
Download the Burger King app and receive an offer for a 59¢ cheeseburger when you order on mobile. While the fine print says it’s one burger per customer, Hip2Save claims they were able to order multiple cheeseburgers in just one visit.
Source : https://www.distractify.com/p/national-cheeseburger-day-2019-freebies