This make-ahead turnip casserole is a delicious and comforting side dish that can be prepared in advance. It features tender turnips layered with a creamy sauce and topped with a crispy breadcrumb topping. The casserole is then baked until golden and bubbly, resulting in a dish that is both hearty and flavorful. Perfect for holiday gatherings or weeknight dinners, this make-ahead turnip casserole is sure to be a hit with your family and friends.