A comforting and easy-to-make French onion soup recipe perfect for two, featuring slow-caramelized onions, rich beef broth, and melted Gruyère cheese on toasted baguette slices.
Caramelize onions slowly over medium-low heat to avoid bitterness. Use low-sodium broth to control saltiness. Watch cheese closely under broiler to prevent burning. For gluten-free, substitute baguette with gluten-free bread or cheese crisps. For vegetarian, use vegetable or mushroom broth. Adding a splash of Worcestershire sauce before serving adds umami. Grate cheese finely or mix Gruyère with mozzarella for better melting.
Keywords: French onion soup, caramelized onions, Gruyère cheese, cozy soup, easy soup recipe, beef broth soup, comfort food