Overview
- Royal Perks members who purchase a Krabby Whopper on Dec. 19 can claim a second one free through the Burger King app.
- The one-day offer coincides with the theatrical debut of The SpongeBob Movie: Search for SquarePants.
- The promotion is available only at participating restaurants and is limited to supplies on hand.
- The Krabby Whopper is a limited-time 1/4‑lb Whopper variant on a yellow, square bun with American cheese, lettuce, tomatoes, pickles, onions, mayo and ketchup.
- Burger King says the sandwich has been a fan favorite since its early‑December launch, part of a broader SpongeBob lineup that includes Mr. Krabs’ Cheesy Bacon Tots, Patrick’s Star‑berry Shortcake Pie, Pirate’s Frozen Pineapple Float, a Bikini Bottom Bundle and a special King Jr. Meal with collectible toys.