The new toasted cheddar chalupa at Taco Bell has aged cheddar baked into the chalupa shell.
Starting at $2.49 the filling is pretty standard for Taco Bell.
The basic filling is beef, sour cream, lettuce, tomato, cheese. With steak, chicken, and special sauce options available likely for a little higher price.
The latest $5 box includes a toasted cheddar chalupa with 2 regular tacos and a drink.