Free Mushroom Swiss Burger From Whataburger

Seriously, who can resist a free burger? Whataburger is giving away a Mushroom Swiss Burger – totally free – when you grab a medium drink and fries. It's a classic for a reason, that savory Swiss and those juicy mushrooms on a perfectly grilled patty... so good. To snag this deal, you’ll need to log into your Whataburger account online – it only takes a minute, really. Remember, it’s a US-only offer, and the deadline is May 14th, 2025. My friend was raving about it, so I'm definitely checking it out. Don't miss out – redeem your offer at checkout!