A vegetarian twist on the classic British dish, this mushroom and lentil shepherd's pie is a hearty and nutritious recipe. It features a savory filling of mushrooms, lentils, carrots, and peas, topped with a creamy mashed potato crust. Mushrooms are a great source of vitamins and minerals, while lentils provide protein and fiber. This comforting dish is perfect for a cozy dinner and leftovers can be enjoyed the next day.