Hoagie Bake is a delicious and hearty casserole that combines all the flavors of a classic hoagie sandwich. Layers of deli meats, cheese, and vegetables are baked with a savory egg custard and topped with a crispy bread crumb topping. This dish is perfect for a crowd or as a make-ahead meal. It's easy to customize with your favorite hoagie ingredients and can be served hot or cold.