Tomato and Basil Fettuccini

1/4 cup chopped onion
1 clove garlic, minced
1/4 cup olive oil
3 1/2 cups (28 ounce can) peeled tomatoes with liquid
6 fresh basil leaves, chopped, or 1 tablespoon dry basil
1 teaspoon salt
1/2 teaspoon pepper
12 ounces fettuccine, uncooked
Parmesan cheese (optional)

Saut