Onion soup is one of the most iconic dishes of French cuisine. With its gently caramelized onions, its rich flavorful broth, its toasted bread, and its generous layer of melted cheese, it offers a simple yet incredibly comforting meal.
Traditionally, the gratin finish is achieved under the oven broiler. But thanks to the Air Fryer, it’s now possible to get an even more golden, crispy, and melty crust in just a few minutes. The cheese bubbles, takes on a beautiful amber color, and forms that delicious layer that makes the recipe so appealing.
Why use it to top soup with a gratin?
