Beef Florentine Casserole is a hearty and flavorful dish that combines tender beef, spinach, and cheese in a creamy sauce. This casserole is a perfect comfort food for a family dinner or potluck. The beef is cooked until tender and then layered with sautéed spinach and a creamy cheese sauce. Topped with breadcrumbs and baked until golden and bubbly, this casserole is sure to be a crowd-pleaser.