Tomato basil pasta sauce is a classic pasta sauce that combines the flavors of ripe tomatoes and fresh basil. To make tomato basil pasta sauce, you would typically start by sautéing chopped onions and garlic in olive oil until they are soft and fragrant. Then, you would add canned or fresh tomatoes, along with tomato paste, salt, pepper, and a pinch of sugar to balance out the acidity of the tomatoes. You can also add dried herbs like oregano or thyme, but the star ingredient of this sauce is fresh basil.