Free Whataburger Mushroom Swiss Burger W/Purchase Drink & Fries

log into your rewards account
Look for the free Mushroom Swiss Burger offer in your account
Purchase a medium drink and medium fries to claim your free burger.
Show the offer at checkout before May 14th, 2025

https://whataburger.com/home

* US only. Expires 5/14/25 at 5:56 am. Must purchase medium drink and fries. Whataburger account required. Offer may change at any time.