Potato casserole is a comforting dish made primarily from potatoes, often combined with ingredients like cheese, cream, and various seasonings. It is typically baked in an oven until the top is golden brown and crispy, while the inside remains creamy and soft. This dish can be customized with additional ingredients such as bacon, onions, or vegetables to enhance flavor and texture. Potato casserole is popular for family gatherings and holiday meals, as it can serve a large number of people and is easy to prepare in advance.