These sweet potato and black bean tacos are a flavorful and healthy twist on traditional tacos. Start by roasting diced sweet potatoes in the oven until they are tender and slightly caramelized. In a skillet, sauté black beans with onions, garlic, and your choice of spices like cumin and chili powder. Warm up corn tortillas and fill them with the roasted sweet potatoes and black bean mixture. Top the tacos with avocado slices, salsa, and a squeeze of lime juice. These tacos are packed with fiber, protein, and vitamins, making them a nutritious and delicious meal option.