Melt butter in medium saucepan with olive oil over medium/low heat. Add the garlic, cream, white pepper and bring mixture to a simmer. Stir often.

Add the Parmesan cheese and simmer sauce for 8-10 minutes or until sauce has thickened and is smooth.

When sauce has thickened add the Mozzarella cheese and stir until smooth. STIR FREQUENTLY. While the sauce cooks, boil noodles for 3-5 minutes. Place pasta on serving plates and spoon sauce over pasta.