Marinara Sauce, Mock

Heat a medium-size heavy-bottomed saucepan over medium heat. Add the oil and butter. Add the onion when butter foams 9do not brown) and saute for about 3-4 minutes. Add the celery and cook for an additional 3 minutes. Add the broth and tomato paste to the saucepan. Whisk to dissolve paste. Add the remaining ingredients. Stir and simmer the sauce gently for about 15 minutes. For a smooth sauce, put iit in a food processor or blender. If you are making the sauce only, without meatballs, cover and simmer for about 1 1/2 hours, stirring occasionally. Add a little broth if the sauce gets too thick. Adjust seasoning.