Bring a large saucepan of lightly salted water to the boil. Add noodles and cook for 8 to 10 minutes or until al dente; drain. Preheat oven to 190 degrees C.
Melt butter in a large heavy frypan. Saute mushrooms for 1 minute. Season with salt and pepper then stir in turkey, condensed soup and sour cream. Place cooked noodles in a 20x30cm 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.