Which seasonal item features a pumpkin-flavored dessert at Taco Bell?

The seasonal item that features a pumpkin-flavored dessert at Taco Bell is found in the option that highlights pumpkin spice cinnamon twists. These treats are a seasonal offering that combines the classic cinnamon twists with the rich and warm flavors of pumpkin spice, resonating with the fall season and providing a sweet and crispy dessert experience. This seasonal approach captures the popularity of pumpkin spice during autumn, making it a special treat that fans look forward to. The combination of cinnamon and pumpkin spice in the twists creates a unique flavor profile that stands apart from standard offerings, enhancing both the menu and the seasonal theme.

Other options mentioned do not accurately represent a popular pumpkin-flavored dessert at Taco Bell. For instance, pumpkin spice nachos and pumpkin Premier Burrito do not exist in the menu, and pumpkin cookie dough does not align with Taco Bell's offerings. The cinnamon twists specifically cater to those craving a pumpkin-inspired dessert, solidifying their place as a beloved seasonal item.