Spaghetti Sauce

Here is my spaghetti sauce recipe for those of you who thought it was so good. 

1 pound ground beef (optional)
1 tablespoon olive oil
1/2 cup onion chopped
1 small zucchini chopped
4 mushrooms chopped (or however many you like)
1/2 teaspoon garlic powder
1 (6 ounce) can tomato paste
2 (8 ounce) cans tomato sauce*
1 1/4 cups water
2 teaspoons salt
1 teaspoon Worcestershire sauce
1 tablespoon sugar
1/2 teaspoon basil
1/2 teaspoon black pepper
1 tablespoon parsley flakes

1. In a saucepan, heat olive oil and cook onion, zucchini, and mushrooms until onion is transparent.  Set aside.
2. Brown ground beef. Drain.  Add vegetables to the beef. (or if you want vegetarian just skip the meat.)
3. Add garlic powder, tomato paste, tomato sauce, and water.
4. Add remaining ingredients.
5. Simmer uncovered for 30 minutes.
6. Serve over cooked pasta of choice with grated Parmesan cheese if desired.

*You can do 2 cans tomato paste with 2 1/2 cups of water if you prefer, or you could use 4 cans tomato sauce.  We found that the flavor seemed best with a mix of the two.