Originally served as the signature dish at the Divan Parisienne Restaurant in New York City during the 1930's through the 1950's. The restaurant is long gone, but the dish lives on and on...it still remains one of America's most classic and delicious casseroles. This rich and velvety one-dish meal is perfect for a potluck dinner, an elegant buffet, or the family supper table. It is excellent served over rice.