Clean mushrooms by trimming the tip of the stems with roots and dirt and rinsing in water. Cut into 1/8-inch slices. Cut prosciutto into strips
Melt butter in a pan over medium heat and add mushrooms. Sauté over high heat for 3 - 4 minutes, then stir in prosciutto and chopped parsley
Combine, season with salt and immediately remove from the heat
In the meantime, boil pasta in plenty of salted water for 5 minutes. Drain, reserve a bit of cooking water and sauté in the pan with the prepared sauce
Add grated Parmigiano and a few tablespoons of hot cooking water
