The Double Stacker was originally introduced back in 2006 as part of the now-discontinued BK Stacker line, which featured a burger with a choice of one, two, or four patties (the Single, Double, and Quad Stacker, respectively). It doesn't look like its bigger and smaller siblings made the trip back.
The Double Stacker consists of two flame-grilled beef patties, bacon, American cheese, and creamy Stacker sauce on a toasted sesame seed bun.
Image via Burger King.
Nutritional Info - Burger King Double Stacker (137g)
Calories - 420 (from Fat - 230)
Fat - 26g (Saturated Fat - 10g)
Sodium - 660mg
Carbs - 26g (Sugar - 6g)
Protein - 22g