Cook the pasta according to package directions just until al dente. While the pasta is cooking, combine the prosciutto, mushrooms, tomato paste, and vermouth in a small saucepan. Cook over medium heat until the mushrooms are soft and the liquid starts turning to a glaze, about 5 to 10 minutes. Remove from heat and stir int he butter to melt.
Reserve 1 cup of pasta cooking water, then drain the pasta. Toss the pasta with the sauce and cheeses, adding some of the reserved pasta water as needed to help the cheese melt and loosen the sauce a bit. Season to taste with nutmeg, salt and pepper and garnish with chopped parsley; serve immediately.
Recipe by Cooking With MicheleĀ® at https://cookingwithmichele.com/2022/02/macaroni-milanaise/