Marcella Hazan's Tomato Sauce

Add tomatoes (juices and all), butter, onion, (optional garlic), and salt to a saucepan. Cook uncovered at a very slow, but steady simmer for about 45 minutes, or until the sauce is thickened to your liking.

Stir occasionally, crushing any large pieces of tomato with a wooden spoon.

Taste and add more salt as needed.

Discard the onion and serve as is or optionally use an immersion blender to blend the tomato chunks into a smoother more uniform texture. This will also slightly thicken the texture of the sauce. If it’s still too thin, you can continue to simmer the sauce after it has been blended.

Serve with your favorite pasta with freshly grated Parmesan cheese.