This vegan lentil soup is a hearty and nutritious meal that's perfect for a chilly day. To make it, start by sautéing some diced onion, carrot, and celery in a little bit of oil. Add some minced garlic and cook for another minute. Add some vegetable broth, canned diced tomatoes, and dried lentils. Bring to a boil, then reduce the heat and simmer until the lentils are tender. Season with salt, pepper, and your favorite herbs (such as thyme, rosemary, or bay leaves). Serve with some crusty bread for a satisfying meal.