This zesty slow-cooker tomato sauce sauce is an easy classic. Set it and forget it! And the result is so flavorful, it will quickly become a family favorite. Enjoy pasta, meatballs, chicken parm, and more!
Turn the slow-cooker on high, let it heat for 5 minutes, and add olive oil, onion, and garlic. Stir and cover. (The pot won’t get hot enough to brown them.) Cook for 1 hour, or until onion is soft and wilted. Uncover and add tomatoes, parsley, basil, oregano, salt, and pepper. Reduce the heat to low, and stir. Cook with the cover off for approximately 4 hours. The sauce is done when it is thick and not watery.
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