Bottled spaghetti sauce and bottled pizza sauce will NOT do. There is no comparison. Homemade marinara supersedes the stores' fake-wanna-be sauces at all levels. Especially if the ingredients are fresh from the dirt.
Homemade Marinara Sauce
This recipe comes as an estimation. Last night I used the following proportions to make a spaghetti sauce for myself and my husband. We were left with oodles of leftovers.3 small to medium ripe tomatoes
1 large onion (or equivalent in small ones)
tt salt, pepper and garlic powder
tt Italian seasoning (or even better, fresh oregano, chopped! Hopefully by the end of the summer mine will be usable for this recipe!)
* 1-2 small cans of tomato sauce
Heat small amount of oil (<1T) in large saute' pan. Chop tomatoes and onion(s) to small dice and saute' until tender. Add seasonings.
*Adding the tomato sauce: For spaghetti sauce I typically use two cans, but add one can to start with and add the second can slowly, using only the amount that you think necessary to achieve a good consistency. For pizza sauce, 1 can or less is generally sufficient.
Simmer on low to allow flavors to blend. If making spaghetti, brown ground beef and add to sauce.