What is "cheese sauce"?

Cheese sauce is a creamy sauce made from cheese, milk or cream, butter, and often thickened with flour or cornstarch. It has a rich and velvety texture, with a savory and cheesy flavor that varies depending on the type of cheese used. Common cheeses used in cheese sauce include cheddar, Gruyère, Parmesan, and blue cheese, among others. Cheese sauce is versatile and can be used in a variety of dishes, such as macaroni and cheese, nachos, vegetables, and as a topping for baked potatoes or steamed broccoli.