First things first. While the fast-food chain has a growing number of vegan and vegetarian options, everything on Taco Bell's menu is customizable. For example, if something has meat, you can swap that out for refried pinto beans or black beans — both vegan proteins — to make it vegetarian.
You can make any vegetarian item vegan by asking for it "fresco style," which replaces any cheese, creamy sauces, sour cream and/or guacamole with pico de gallo.