Preheat oven to 350. Prepare pasta according to package directions. Meanwhile, melt butter in a large skillet over medium-high heat; add mushrooms and prosciutto, and saute 5 minutes.

Stir together mushroom mixture, chicken, next 5 ingredients, and 1/2 cup cheese; stir in pasta. Spoon mixture into lightly greased 11 x 7 inch baking dish; sprinkle with remaining cheese.

Bake at 350 for 35 minutes or until bubbly.

I have made this without prosciutto and with 3/4 cup chicken broth when I didn't have marsala-still delicious! I also usually cook the pasta in chicken broth for more flavor.