LOVE this. One of my favorite soups for fall :) Cooking the onions for a very long time over low heat mellows their flavor. Don't stir them too often or they won't caramelize. This soup tastes best when made with homemade beef stock.
The Best French Onion Soup - French Onion Soup To Die For! Authentic and delicious. Not just onions overflavored with beef broth. Real flavor made from oven-caramelized onions. Click through for recipe!