That's the best part of French Onion soup, the rich, caramelized onions! Thumb Up Helpful (982)Rating: 5 stars I LOVE French Onion Soup!! I used grated Gruyere and this was absolutely the best french onion soup I have ever had and I can't believe I made it myself!! Thumb Up Helpful (278)Rating: 5 stars After ordering this soup many times at restaurants, this recipe reproduces precisely what French Onion Soup is supposed to taste like. Look, French Onion Soup a challenging soup to eat: chunks of chewy cheese and soggy bread floating on top...but it's supposed to be that way.