To Store In The Fridge: Allow the sauce to completely cool prior to storing in an airtight container. Once the sauce has cooled, transfer it to an airtight container and place in the refrigerator for up to four days. You can reheat it in the microwave or on the stovetop. To Freeze alfredo sauce without whipping cream, transfer it to a freezer-safe bag or container and freeze for up to six months. To reheat, thaw in the fridge, then warm on the stovetop, whisking until heated through.