BurgerFi: Buy a BurgerFi Cheeseburger, get the second for $1.

Farmer Boys: Big Cheese cheeseburgers at Farmer Boys are $1 each. Guests must mention the $1 deal to get the Big Cheese burgers, which normally sell for over $4, for one buck apiece.

Johnny Rockets: Buy one, get one half off for all cheeseburgers on the menu. A bonus: Buy one, get one half off for all milkshakes on the menu.

McDonald’s: With the fast-food chain’s mobile app, find offers including a $1 McDouble, available once a day.

Wendy’s: Get a free Dave’s Single cheeseburger with any purchase from now through the end of September with the Wendy’s app from the App Store or Google Play. Offer refreshes daily.

White Castle: On September 18, use this coupon for a free cheese slider with any purchase.