Melt 4 tablespoons of butter in a cooking pot over medium heat. Add finely minced 1 small carrot, 1 small onion and 2 tablespoons parsley and cook, stirring now and then, until the onion is pale yellow and soft, perhaps 4 to 5 minutes. Add 10 ounces of ground veal and 1/4 pound sliced prosciutto finely diced and cook, until the meat is no longer pink, stirring now and then.
Add 1/2 cup dry Marsala wine and cook until it is almost all reduced. Stir in 3 cups strained or crushed canned tomatoes, 1 cup chicken broth, 1/4 teaspoon freshly ground nutmeg, and season with salt and pepper.
Cook, uncovered over low heat (gentle simmer) 45 minutes or so, until the sauce has a medium-thick consistency.
During the last few minutes of cooking add in 2 tablespoons double (heavy) cream and stir a few times. While the sauce is cooking, cook penne rigatta, fresh made gnocchi de patate (potato gnocchi), spaghetti, noodles or rice to serve with the sauce. When serving, top with freshly grated parmigiano. I like to stir in perhaps a 1/2 cup of the cheese to potato gnocchi and sauce.