Lentil stew is a hearty and comforting dish that is perfect for a cold winter day. Start by sautéing onions, carrots, and celery in a pot until they are soft. Add in lentils, vegetable broth, and your favorite seasonings. Let the stew simmer for about an hour until the lentils are tender and the vegetables are cooked through. Serve with crusty bread for a filling and satisfying meal.