Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 to 10 minutes or until al dente; drain. Preheat oven to 375 degrees F (190 degrees C).
Melt butter in a large heavy skillet. Saute mushrooms for 1 minute. Season with salt and pepper, and stir in turkey, condensed soup, and sour cream. Place cooked noodles in a 9x13 inch baking dish. Pour sauce mixture evenly over the top. Sprinkle with Parmesan cheese.
Bake in preheated oven for 20 to 25 minutes, or until sauce is bubbling.
