1. Melt butter in medium saucepan with olive oil over medium/medium low heat.
2. Add the garlic, cream, pepper and bring mixture to a simmer.
3. Add the Parmesan cheese and simmer sauce for 8-10 minutes or until sauce has thickened and is smooth.
4. When sauce has thickened add the Mozzarella cheese and stir until smooth. Stir Frequently.
5. While the sauce cooks, boil noodles for 3-5 minutes.