This vegan lentil shepherd's pie is a hearty and comforting dish that is perfect for a cozy night in. The lentils are cooked with onions, carrots, and celery, creating a flavorful and nutritious base for the dish. The mashed potato topping is made with vegan butter and almond milk, creating a creamy and delicious layer on top of the lentil mixture. This dish is a great way to get your daily dose of protein and vegetables, while still enjoying a comforting and satisfying meal.