What is "mornay sauce"?

Mornay sauce is a creamy and cheesy sauce made from béchamel sauce, combined with grated cheese, typically Gruyère or Parmesan, and seasoned with salt, pepper, and nutmeg. It has a smooth and velvety texture with a rich and savory flavor profile, highlighted by the nuttiness of the cheese and the warmth of the nutmeg. Mornay sauce is commonly used as a topping or accompaniment for dishes such as pasta, vegetables, eggs, and seafood. It adds a luxurious and indulgent touch to meals, providing a comforting and satisfying element with its creamy consistency and cheesy taste.