12 oz. white or green fettuccine, cooked
1 stick butter
1 c. whipping cream
1/3 c. grated Parmesan cheese
1 can sliced mushrooms
3 tbsp. butter
Parmesan cheese for garnish
Salt and cracked pepper to taste

Prepare fettuccine according to package directions. Rinse and drain. While fettuccine is cooking, prepare sauce.