Saute mushrooms and garlic in melted butter for 2 to 3 minutes. Remove garlic and discard. Add zucchini and cream and simmer for 5 minutes.
Combine hot fettucine, parsley, cheese, salt and pepper in a serving bowl. Toss well. Add the mushroom-zucchini-cream mixture. Toss again. If desired, meat may be added now. Makes 6 to 8 servings. Enjoy!