To make mac and cheese balls, cooked macaroni is typically mixed with a cheese sauce made from a combination of melted cheese, milk, and butter. Other ingredients such as herbs, spices, and breadcrumbs can also be added to give the balls additional flavor and texture. Once the mixture is cooled, it is shaped into small balls and coated in breadcrumbs or other coatings before being fried or baked until crispy and golden brown.