A quick and comforting French onion soup recipe that caramelizes onions to perfection and tops with melted Gruyère cheese, ready in about one hour.
Patience during caramelization is key to avoid burnt onions and achieve sweet, rich flavor. Use medium-low heat and stir every 5 minutes. Watch cheese closely when broiling to prevent burning. For vegetarian version, substitute beef broth with vegetable broth and omit wine.
Keywords: French onion soup, easy soup recipe, caramelized onions, cozy dinner, one-hour soup, Gruyère cheese soup