I developed this through many years of trial and error with my boys. As with many young children, they HATED most vegetables, and I couldn't stand a red sauce made without them. I had to get very inventive, and "sneak" the vegetable flavor into my sauce, without them knowing what was in it. Now that they are grown, I'm not so diligent about mincing my vegetables, and usually just dice them by hand when I make this delicious sauce. The real beauty of this sauce is that the seasoning is strictly "no fuss". The Italian sausage, vegetables and dry salad dressing mix provide most of the seasoning. No need to try to figure out how much oregano is too much! I use the same sauce for manicotti, lasagna and baked ziti. It's also terrific on baked potatoes for a quick lunch!