This sweet potato, carrot, apple, and red lentil soup is a hearty and nutritious dish that is perfect for chilly days. The combination of sweet potatoes, carrots, and apples gives the soup a naturally sweet and comforting flavor, while the red lentils add protein and a creamy texture. This soup is easy to make and can be enjoyed as a light lunch or a comforting dinner. Serve it with a crusty bread for a complete meal.