classic marinara sauce

I planned to teach a cooking camp the week my oldest left for college as a distraction.  It turned out to be a great distraction.  One of the recipes my little culinary queens made was this classic marinara sauce.  The next day they used it to make baked chicken parmesan, which was divine.
This sauce is so good I made it tonight and served it over tortellini.  I'm going to declare it Hall of Fame.

classic marinara sauce
2 tablespoons olive oil
1 yellow onion, minced
3 tablespoons minced garlic
2 (15 ounce) cans tomato sauce
1 (28 ounce) can crushed tomatoes
salt
freshly ground black pepper
1/4 cup chopped fresh basil, strongly recommended

Heat the oil in a large pot over medium heat.  Add the onion and cook for about 5 minutes until soft.  Add the garlic and cook for a minute.  Add the tomato sauce and crushed tomatoes (and fresh basil if using).  Season with salt and pepper to taste.  Simmer for at least 10 minutes.