Käsespätzle is a simple noodle dish that combines spätzle noodles with a creamy mixture of melted cheese. The noodles are also called knöpfle, meaning little buttons, and are made with eggs, flour, milk or water, and seasonings such as salt, pepper and (sometimes) nutmeg, while käse refers to the melted cheese mixture, which is usually a combination of two or more types of cheese such as Edam, Gouda, Fontina, Gruyère, Appenzeller, or Emmental cheese.
The noodle mixture is typically pressed through a specially designed spoon or colander directly into boiling salted water and cooked until done before it is mixed with the melted cheese. Also referred to as käsknöpfle, the dish is typically enjoyed with additional grated cheese and caramelized onions on top, and typical accompaniments include apple sauce, potato salad, and fresh green salads.