This traditional spaghetti sauce from scratch recipe is so simple and easy that you will never want another! It has been passed down through the generations in my family, and it is a real winner with great results every single time.
Blend tomatoes celery, green peppers, and half of onions in a blender to desired level of chunkiness. We like ours pretty smooth and so blend it for a good long while on the chop setting.
Transfer blended vegetables to a very large pot (at least 8 quarts). Add spices, tomato paste, mushrooms, and remaining onions and cook for 3 hours or until desired consistency is reached.