Lay out four tortillas. Lay veggies and beans in the center of each tortilla, dividing veggies and beans evenly. Mix salsa and Greek yogurt in a bowl. Add a dollop of salsa mixture on top of veggies. Drizzle veggies with lime juice (optional)
Plan ahead to save money and time: Soak 1 cup dry black beans overnight, boil for 45 minutes or until soft, drain and rinse, divide into 3/4 cup servings and freeze in freezer bags or containers. Each time you make veggie tacos, take out a container and thaw!