For those fond of the distinctive bitterness of mustard greens, this rustic dish will be a satisfying meal-in-one. The sweet sausages, bland pasta, and intense greens balance naturally.
Prick sausages; cook, covered, in a large flameproof casserole with a thin layer of water for about 5 minutes, until no longer pink. Uncover, evaporate liquid, and cook over moderate heat, turning often, until browned on all sides. Transfer to a board.
Chop mustard leaves; put into casserole and cook over high heat until wilted. Add water and salt and simmer, p