Classic French onion soup is more than just a warm bowl of broth; it’s a delightful culinary experience. The slow caramelization of onions brings out their natural sweetness, creating a depth of flavor that’s both comforting and satisfying. The addition of cheese, melted to perfection under the broiler, creates a gorgeous golden crust, adding texture and richness to the dish. Plus, this recipe allows for customization — from the type of broth used to the kind of bread you serve with it, every cook can put their personal spin on this classic. Whether served as an appetizer or a main dish, French onion soup is sure to impress your family and friends
Step-by-Step Preparation
Step 1: Caramelize the Onions
Start by melting the butter and olive oil in a large Dutch oven or heavy-bottomed pot over medium heat. Once the butter is melted and bubbling, add the sliced onions and sprinkle them with salt. Stir the onions to coat them evenly in the fat. Cook the onions slowly, stirring occasionally, for about 30-40 minutes. The goal is to caramelize them until they’re golden brown and sweet, not to burn them. If the onions begin to brown too quickly, reduce the heat. About halfway through, add the teaspoon of sugar, which will enhance the caramelization process.
Step 2: Add the Liquid Ingredients
Once the onions are perfectly caramelized, sprinkle in the thyme and add the bay leaf. Then, pour in the dry white wine, scraping the bottom of the pot to release any brown bits — this adds immense flavor. Let the wine simmer for a few minutes until it reduces slightly. Next, carefully add the beef broth (or vegetable broth) to the pot, and season with salt and black pepper. Bring the mixture to a gentle simmer and let it cook for an additional 20 minutes to allow the flavors to meld.
Step 3: Prepare the Bread and Cheese
While the soup simmers, prepare the bread. Preheat your oven to 350°F (175°C). Arrange the slices of baguette on a baking sheet and toast them in the oven for about 10-15 minutes, or until they are golden brown and crisp. Once toasted, remove them from the oven and set aside.
