For a richer flavor, consider adding a tablespoon of balsamic vinegar during the last 5 minutes of simmering. Gruyere cheese can be substituted for, or mixed with, the mozzarella for a more authentic French onion soup experience. To prevent the bread from becoming soggy, you can lightly toast it before adding it to the soup. This soup can be made ahead of time and stored in the refrigerator for up to 3 days. Reheat gently before broiling the cheese.
Lela Brown
Apr 26, 2025The soup was delicious, but my bread got a little soggy. Next time, I'll toast it first.
Garrett Parker
Mar 11, 2025This is the best French Onion Soup I've ever made! The caramelization process is key.
Caitlyn Armstrongblick
Feb 23, 2025This recipe is fantastic! The onions took a while to caramelize, but it was totally worth it. The soup was so flavorful and comforting.
Maxime Lueilwitz
Feb 17, 2025I used Gruyère cheese instead of mozzarella, and it was amazing! Definitely a keeper.
Guiseppe Johnson
Dec 14, 2024I added a splash of sherry, as suggested, and it added a wonderful depth of flavor. Thank you for the great recipe!
Orval Effertz
Jul 18, 2024I didn't have any white wine, so I used a little apple cider vinegar instead, and it still turned out great!
Carrie Waters
Jan 16, 2024I made this for a dinner party, and everyone raved about it. Highly recommend!
Leon Jerde
Dec 20, 2023The instructions were very clear and easy to follow. My family loved it!