This sweet potato and black bean casserole is a hearty and nutritious meal that is perfect for a cozy dinner. Sweet potatoes are roasted until tender, then combined with black beans, corn, and spices to create a flavorful filling. Top with cheese and bake until bubbly and golden. Serve with a dollop of sour cream and a sprinkle of fresh cilantro for a delicious and satisfying meal that is packed with protein and fiber.