Only twenty minutes stand between you and getting this delicious vegetarian dinner on the table. The tacos are filled with a zesty vegetable and tofu mixture to rival any other taco. Crumbling extra-firm tofu is an old-school trick to create the meaty texture of ground beef, and here you wont even miss the meat thanks to a hearty dusting of chili powder and the tasty duo of corn and sweet potatoes. Make it a party and serve with tortilla chips and guacamole. Its a family friendly meal that is likely to become a classic.