Vegetarian Spaghetti Sauce

2 Tbsp olive oil
2 small onions, chopped
3 cloves garlic, chopped
11/4 C zucchini, sliced
1 Tbsp oregano, dried
1 Tbsp basil, dried
1 can (8 oz) tomato sauce
1 can (6 oz) tomato paste*
2 medium tomatoes, chopped
1 C water

*Reduce sodium by using 6-oz can of no salt added tomato paste.
New sodium content for each serving is 260 mg.