Ultimate Veggie Burgers This is a veggie burger that you can sink your teeth into! With a brilliant hue from shredded beets, and tons of fiber and flavor from shitake mushrooms, black beans, chipotle peppers, and spices they'll be sure to please the vegetarians and the omnivores in your group. I recommend topping them with jack cheese, spicy mustard, and banana peppers, but feel free to use your favorites!