As of October 10, Taco Bell is making a lot of its fans doubly happy by reviving one of its best-loved menu items nationwide -- the Double Decker Taco is back. But you have a pretty limited time ...

The return of Taco Bell’s Double Decker® Taco Supreme® is a nostalgic win for longtime fans, bringing back the classic dual-layered creation that combines a soft tortilla with refried beans ...

Fourth Meal and double-decker tacos suggests that it can now help fight fat. In an ad campaign much like Subway's Jared Fogle spots, Taco Bell has introduced its own weight-loss character.

but because Taco Bell is a proving ground for culinary innovation. Yeah, seriously. Double portion of steak, crispy potatoes, chipotle sauce bacon, and a 3 cheese blend wrapped in a handheld tortilla.