cup at a time until pieces hold together when boiled. Using floured fork, press tines downward into each piece so it curls around fork. Arrange in single layer without touching on generously floured towel. Let gnocchi stand 3 to 4 hours at room temperature to dry. Bring water and salt to boil. Add gnocchi. Stir gently with wooden spoon. When gnocchi come to surface let cook 2 minutes. Drain well. Place on platter. Spoon Tomato-Porcini Sauce over. Dot with butter. Sprinkle with Parmesan.