Found this recipe here: http://allrecipes.com/Recipe/Pasta-Pomodoro/Detail.aspx
Here's the recipe for 4 servings with my changes:

INGREDIENTS
* 2 (8 ounce) packages angel hair pasta )I used Barilla Plus Multigrain Angel Hair
* 1/4 cup olive oil
* 1/2 onion, chopped
* 4 cloves garlic, minced
* 2 cups roma (plum) tomatoes, diced (I used the food processor)
* 2 tablespoons balsamic vinegar (I used Nakano Balsamic Blend Seasoned Rice Vinegar)
* 1 (10.75 ounce) can low-sodium chicken broth (I used Tones Chicken Base from Sam's)
* crushed red pepper to taste
* freshly ground black pepper to taste
* 2 tablespoons chopped fresh basil (also added chopped fresh Italian Parsley)
* 1/4 cup grated Parmesan cheese

DIRECTIONS
1. Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 minutes or until al dente; drain.
2. Pour olive oil in a large deep skillet over high-heat. Saute onions and garlic until lightly browned. Reduce heat to medium-high and add tomatoes, vinegar and chicken broth; simmer