Sweet potato casserole is a popular dish, especially during the fall and winter holidays. It typically consists of mashed sweet potatoes mixed with ingredients like sugar, butter, milk, and spices. The mixture is often topped with a layer of marshmallows or a crumbly topping made from brown sugar, butter, and pecans. This comforting side dish is known for its sweet flavor and creamy texture. It is commonly served at festive gatherings, such as Thanksgiving and Christmas, and can be enjoyed as a delicious complement to savory main courses.