This classic French Onion Soup is a comforting and flavorful dish that features caramelized onions simmered in a rich, savory broth. Topped with a slice of crusty baguette and melted Gruyère cheese, this soup is the perfect warm and satisfying meal for a chilly day. The slow-cooked onions lend a deep, sweet flavor that is perfectly balanced by the hearty beef broth and aromatic herbs.