01 -
2 tablespoons olive oil
02 -
1 small yellow onion, diced
03 -
4 garlic cloves, minced
04 -
Salt and pepper
05 -
1 (28-ounce) can diced tomatoes, drained
06 -
1-2 tablespoons balsamic vinegar
07 -
½-1 cup pasta water
08 -
16 ounces thin spaghetti or angel hair
09 -
½ cup fresh basil, chopped
10 -
½ cup parmesan cheese, grated