French onion soup is a bistro classic, the most homey and delicious example of good cafe cooking. But only a handful of frugal ingredients make up this restaurant favorite. Onions, broth, salt, and butter mingle in a slow magic that transforms them into a wildly luxurious bowl of silky onions and dark broth. If you've only eaten French onion soup in restaurants you'll be shocked at how easy it is to make in your own kitchen.
Here is a step-by-step recipe for making the best French onion soup you've ever eaten. It's one of the simplest yet most satisfying soups, and one to learn by heart.