Traditional French Onion Soup Recipe

Name: Traditional French Onion Soup Recipe
Prep time: 15 min
Cook time: 50 min
Total time: 1 h 5 min
Yield: 4 servings
Cuisine: French
Ingredients: 1.75 lbs large yellow onions, thinly sliced; 2 tbsp unsalted butter; 2 tbsp olive oil; 4 cups beef or vegetable broth; 2/3 cup dry white wine (Sauvignon Blanc or Pinot Grigio); 1 bay leaf; 1 sprig of fresh thyme; 8 slices of toasted baguette; 1.5 cups shredded Gruyère cheese (approx. 4-6 oz); Salt and freshly ground black pepper

Medium

Easy

Budget-friendly

Description

Looking for an authentic bistro experience at home?

Today, we’re diving into one of the most iconic dishes of French cuisine.

Slow-cooked onions, a rich broth, toasted baguette, and bubbling melted cheese… The result? A delicious easy French onion soup recipe that brings the warmth of a Parisian kitchen to your table.

Ready to get cooking?

Prep Time :

15 minutes

Cook Time :

50 minutes

Servings :

🛒 Ingredients

Servings :

1.75 lbs large yellow onions, thinly sliced
2 tbsp unsalted butter
2 tbsp olive oil
4 cups (1 quart) beef, chicken, or vegetable broth
2/3 cup dry white wine (like Sauvignon Blanc or Pinot Grigio)
1 bay leaf
1 sprig of fresh thyme
8 slices of baguette (day-old or toasted)
1 to 1.5 cups shredded Gruyère or Comté cheese (about 4-6 oz)
Salt and freshly ground black pepper

🥘 Preparation Steps

Prepare the Onions

Peel the onions and thinly slice them into half-moons.
Melt the butter with the olive oil in a large Dutch oven (or heavy-bottomed pot).
Add the onions and cook over low heat for 30 to 45 minutes, stirring regularly until they are deep mahogany in color and perfectly caramelized.

👨‍🍳 Add a pinch of sugar to help the onions release their natural sweetness and reach that beautiful dark color.

Deglaze and Simmer

Increase to medium-high heat and pour in the white wine to deglaze.
Stir well, scraping up the browned bits (the fond) from the bottom of the pot, and let it reduce for 2-3 minutes.
Add the broth, thyme, and bay leaf.
Bring to a boil, then reduce heat and simmer partially covered for 20 minutes.
Season with salt and pepper to taste.

💡 The soup is delicious now, but finishing it under the broiler is the hallmark of a true French Onion soup.

Topping and Broiling (The Finishing Touch)

Preheat your oven broiler to High.
Ladle the soup into broiler-safe crocks or oven-safe bowls.
Place 2 slices of bread on each bowl and cover generously with shredded cheese.
Broil for a few minutes until the cheese is bubbling and golden brown.

👨‍🍳 For extra depth, rub the toasted bread with a clove of raw garlic before placing it in the soup.

Tips for Success

Patience is your best ingredient

True caramelization cannot be rushed. If the onions start to brown too fast or stick, add a small splash of water to keep them from burning.*

The “Fond” is Flavor

Those browned bits at the bottom are flavor gold. Scraping them up when you add the wine is what gives the broth its incredible depth.

Sturdy Bread

Use a baguette that’s a day or two old. If your bread is fresh, toast it in the oven for a few minutes first so it can support the cheese without sinking.

FAQ: Frequently Asked Questions

Which onions are best?

Yellow onions are preferred for their high sugar content, which is essential for deep caramelization.

Can I substitute the cheese?

Gruyère is the traditional choice, but Comté, Swiss, or even a sharp Provolone work beautifully.

Does it keep well?

Yes! The broth actually tastes better the next day. Just wait to add the bread and cheese until you’re ready to serve.

Feel free to leave a comment or share your tips 👨‍🍳