After a test run in St. Louis, the Toronto-based company said it was introducing the burger in Miami; Columbus, Georgia; and Montgomery, Alabama.
The Impossible Whopper consists of a flame-grilled patty made from plants topped with tomatoes and onions, lettuce, mayonnaise, ketchup and pickles on a toasted sesame seed bun.
To mark the occasion, Burger King will have a tour bus go through the three locations. The tour starts in Miami, May 16-18, then on to Columbus May 20-21, and Montgomery on May 22.
Restaurant Brands International wasn't active in premarket trading, but it closed Monday down 2.4% to $65.83.