Similar to the $2 Beefy Crunch Burrito Duo that they're currently offering for a limited time, the $2 Stacker Duo includes a Stacker, a tri-folded seasoned beef quesadilla, and a medium fountain drink for $2.
The Stacker was first introduced as a limited-time menu item in December of last year. It's also available in a $5 Box along with a crunchy taco, a Doritos Locos Tacos, Cinnamon Twists, and a medium drink.
The test is meant to last through mid-November 2018.
Photo via Taco Bell.