The term 'Pasta Sauce Herb' can be broken down into two crossword solutions: BASIL (5 letters) and OREGANO (7 letters). BASIL is an aromatic herb that is commonly used in Italian cuisine, and is a key ingredient in many pasta sauces. OREGANO is another popular Italian herb, and is often used to add flavor to tomato-based sauces. Both herbs are widely used in Mediterranean cooking, and are essential ingredients for creating flavorful pasta sauces.