Before diving into the delicious depths of cheesy French onion soup, let’s talk about what can elevate your dining experience. This dish is rich and hearty, and there are a few key accompaniments that can really enhance the meal.
First, a fresh green salad is a great choice. The light, crisp greens offer a refreshing contrast to the rich soup, and a drizzle of lemon vinaigrette will cleanse the palate after every bite, making each spoonful of soup even more enjoyable.
Crusty bread is almost mandatory with French onion soup. Think sourdough or a classic French baguette—perfect for soaking up every last drop of that cheesy broth. For a drink pairing, a glass of dry white wine, like Sauvignon Blanc, is ideal.
Its crisp acidity complements the richness of the soup, cutting through the decadent flavors and adding a refreshing contrast.
If you’re looking for something more substantial, savory sandwiches are a great option. A grilled cheese or a classic French dip sandwich pairs perfectly with the soup, as the cheese in the sandwich resonates with the cheesy flavors of the soup.
To kick things off, consider a charcuterie board with sliced meats, olives, and cheeses. It makes for an excellent appetizer while you’re waiting for your soup to hit the table, setting the stage for a flavorful meal.

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Picture this: a chilly evening, the sun sets earlier than you’d like, and you find yourself longing for something warm and comforting. Enter cheesy French onion soup, a dish that wraps you in a blanket of warmth with every spoonful. This beloved classic has an allure that exceeds mere comfort food. The rich flavor of caramelized onions, the luscious melt of gooey cheese, and the deep broth create a harmony that’s downright captivating.
I remember the first time I savored this dish at a local bistro in the heart of the city. The moment that bubbling, cheese-laden bowl landed in front of me, my stomach growled with anticipation. I was in for something special.
Since then, I’ve made it countless times at home, tweaking and perfecting my own recipe to achieve that restaurant-quality experience. Let’s explore what cheesy French onion soup truly is and why you’re going to love making it in your own kitchen.
What is Cheesy French Onion Soup?
At its core, cheesy French onion soup is a savory blend of caramelized onions, flavorful broth, and melted cheese. Originating from France, it’s a soup that elevates humble ingredients, turning them into something superb.
The key players include thinly sliced onions sautéed until golden, hearty broth (often beef-based), and a touch of wine for depth. Topping it off, you’ll find a crunchy piece of bread smothered in melted cheese, creating a delightful contrast of textures.
The magic begins with those onions. Slowly cooking them releases their natural sugars, resulting in that characteristic sweet and savory flavor. This is where the beauty of French onion soup lies; it transforms simple ingredients into a dish that feels both luxurious and homey at once.
Why You’ll Love This Cheesy French Onion Soup
It’s hard not to love something that warms you from the inside out. Here are a few reasons why this cheesy French onion soup deserves a spot on your dinner table:
1. Comforting Flavors: The combination of sweet caramelized onions and hearty broth provides a cozy embrace on a chilly night.
2. Easily Customizable: You can easily adapt the recipe to use different cheeses or stocks, making it your own.
3. Healthy Ingredients: Onion is loaded with antioxidants, while the broth adds hydration and flavor without excessive calories.
4. Memorable Presentation: When served in individual cocottes, the bubbling cheese and toasted bread are visually appealing—perfect for impressing guests.
5. Simple to Make: With some patience (the onions do take time to caramelize), the process is straightforward, and the results are incredibly rewarding.
The Ingredients You Will Need to Make Cheesy French Onion Soup
Here’s what you’ll need to create this tantalizing dish:
- 10 cups low-sodium chicken stock
- 6 pounds yellow onions, thinly sliced (about ¼ inch) along the grain
- 8 tablespoons unsalted butter
- 4 tablespoons vegetable oil
- ½ cup dry sherry
- 1 bouquet garni (parsley, thyme, and bay leaves tied together)
- ¼ cup roasted garlic purée
- ½ cup red wine vinegar (to add a bit of tanginess)
- ⅛ cup tomato paste concentrate
- 4 tablespoons beef demi-glace
- 1 tablespoon balsamic vinegar
- Fresh thyme leaves for garnish
- 1 baguette, sliced into 1-inch pieces
- 8 slices aged provolone cheese
- 2 cups freshly shredded Gruyère cheese
- ½ cup grated Parmesan

Directions
Ready to get cooking? Let’s break this down into manageable steps.
Step 1: Caramelize the Onions
Begin by heating the butter and vegetable oil in a large pot over medium heat. Once the butter is melted, add the sliced onions.
Stir them occasionally to ensure even cooking. The goal here is to caramelize, not burn. After about 30 minutes, you’ll see those onions develop a beautiful golden color. Patience is key.
Step 2: Deglaze the Pot
Once your onions are caramelized, pour in the dry sherry. Use a wooden spoon to gently scrape any flavorful bits stuck to the bottom of the pot.
Let it simmer for a couple of minutes. This step adds depth and complexity to the soup.
Step 3: Build the Broth
Add the chicken stock to the pot along with the bouquet garni, roasted garlic purée, red wine vinegar, tomato paste, beef demi-glace, and balsamic vinegar.
Stir well, bringing everything to a gentle boil. Then reduce the heat and let it simmer uncovered for about 30 minutes. This process allows all the flavors to meld beautifully.
Step 4: Toast the Baguette
While the soup simmers, preheat your oven to 400°F (200°C). Arrange the baguette slices on a baking sheet and toast them in the oven for about 8 minutes, or until golden brown.
Step 5: Assemble the Soup
Once the soup is ready, taste and adjust seasoning as necessary. Ladle the soup into oven-safe bowls. Place a slice of toasted baguette over the top of each bowl. Then generously sprinkle the Gruyère and provolone cheeses over the bread.
Step 6: Broil the Cheese
Place the assembled bowls under the broiler for about 4-5 minutes. Keep a close eye! You want the cheese to become bubbly and golden brown. Remove from the oven and let them cool for a minute before serving.
Step 7: Garnish and Serve
Sprinkle fresh thyme leaves on top of the bowls before serving. This final touch not only enhances fragrance but also adds a pop of color.
Notes
Here are a few tips to elevate your cheesy French onion soup:
- Quality Broth Matters: Always use high-quality broth for the best flavor. Homemade is excellent if you have the time, but choose low-sodium varieties if using store-bought.
- Low and Slow for Onions: Don’t rush the caramelization process. It can take an hour for onions to reach their full flavor profile. Stir occasionally to prevent sticking.
- Cheese Choices: Experiment with cheeses. Gruyère is traditional, but other melting cheeses like Fontina or a blend can add a unique twist.
- Garnish Ideas: Consider garnishing with crispy fried shallots or even a dash of truffle oil for an upscale experience.
- Make-Ahead Option: The soup can be made a day in advance and stored in the refrigerator. Just assemble and broil the cheese right before serving.
Storage Tips
If you have leftovers (which is rare, but it happens!), here’s how to store them:
- Refrigeration: Allow the soup to cool before transferring it to an airtight container. It will last well in the fridge for about 3-4 days.
- Freezing: You can freeze the soup before adding cheese or bread. Store it in freezer-safe containers, and it should last for 2-3 months. When you’re ready to enjoy, thaw overnight in the fridge, reheat, and then add the bread and cheese.
Nutrition Information
cheesy french onion soup recipe nutrition facts
Serving Suggestions
Now that you’ve got a steaming bowl of soup in front of you, here are five delightful ways to serve it:
1. Pair with a Simple Arugula Salad: The peppery arugula, mixed with some lemon juice and olive oil, balances the richness of the soup.
2. Serve with a Classic French Side: Consider a ratatouille or a tartiflette for a truly French experience.
3. Accompany with Grilled Proteins: Grilled chicken or shrimp can add protein and round out the meal.
4. Add a Touch of Spice: For some kick, serve it with a side of spicy pickles or sliced jalapeños.
5. Garnish with Fresh Herbs: Fresh parsley or chives can brighten the dish, adding both flavor and texture.

Substitutes for Cheesy French Onion Soup
If you’re missing an ingredient or want to make some adjustments, here are five substitutes that work well:
1. Chicken Stock with Vegetable Broth: For a vegetarian option, swap chicken stock with vegetable broth. It still delivers a rich flavor profile.
2. Sherry with White Wine or Apple Cider Vinegar: In a pinch, you can use white wine instead of sherry. Apple cider vinegar can add that desirable acid but be cautious—it’s potent!
3. Gruyère with Swiss Cheese or Mozzarella: Swiss cheese maintains a nice melt, while mozzarella adds a lovely stretchy quality.
4. Parmesan with Pecorino Romano: This adds a different tangy flavor without losing the essence of saltiness.
5. Butter with Olive Oil: If you’re looking for a dairy-free option, use olive oil for caramelizing onions.

Pairing Suggestions for Cheesy French Onion Soup
Equipment
- Oven
Ingredients
- 10 cups low-sodium chicken stock
- 6 pounds yellow onions thinly sliced (about ¼ inch) along the grain
- 8 tablespoons unsalted butter
- 4 tablespoons vegetable oil
- ½ cup dry sherry
- 1 bouquet garni parsley, thyme, and bay leaves tied together
- ¼ cup roasted garlic purée
- ½ cup red wine vinegar to add a bit of tanginess
- ⅛ cup tomato paste concentrate
- 4 tablespoons beef demi-glace
- 1 tablespoon balsamic vinegar
- Fresh thyme leaves for garnish
- 1 baguette sliced into 1-inch pieces
- 8 slices aged provolone cheese
- 2 cups freshly shredded Gruyère cheese
- ½ cup grated Parmesan
Instructions
Step 1: Caramelize the Onions
- Begin by heating the butter and vegetable oil in a large pot over medium heat. Once the butter is melted, add the sliced onions.
- Stir them occasionally to ensure even cooking. The goal here is to caramelize, not burn. After about 30 minutes, you’ll see those onions develop a beautiful golden color. Patience is key.
Step 2: Deglaze the Pot
- Once your onions are caramelized, pour in the dry sherry. Use a wooden spoon to gently scrape any flavorful bits stuck to the bottom of the pot.
- Let it simmer for a couple of minutes. This step adds depth and complexity to the soup.
Step 3: Build the Broth
- Add the chicken stock to the pot along with the bouquet garni, roasted garlic purée, red wine vinegar, tomato paste, beef demi-glace, and balsamic vinegar.
- Stir well, bringing everything to a gentle boil. Then reduce the heat and let it simmer uncovered for about 30 minutes. This process allows all the flavors to meld beautifully.
Step 4: Toast the Baguette
- While the soup simmers, preheat your oven to 400°F (200°C). Arrange the baguette slices on a baking sheet and toast them in the oven for about 8 minutes, or until golden brown.
Step 5: Assemble the Soup
- Once the soup is ready, taste and adjust seasoning as necessary. Ladle the soup into oven-safe bowls. Place a slice of toasted baguette over the top of each bowl. Then generously sprinkle the Gruyère and provolone cheeses over the bread.
Step 6: Broil the Cheese
- Place the assembled bowls under the broiler for about 4-5 minutes. Keep a close eye! You want the cheese to become bubbly and golden brown. Remove from the oven and let them cool for a minute before serving.
Step 7: Garnish and Serve
- Sprinkle fresh thyme leaves on top of the bowls before serving. This final touch not only enhances fragrance but also adds a pop of color.
Notes
- Quality Broth Matters: Always use high-quality broth for the best flavor. Homemade is excellent if you have the time, but choose low-sodium varieties if using store-bought.
- Low and Slow for Onions: Don’t rush the caramelization process. It can take an hour for onions to reach their full flavor profile. Stir occasionally to prevent sticking.
- Cheese Choices: Experiment with cheeses. Gruyère is traditional, but other melting cheeses like Fontina or a blend can add a unique twist.
- Garnish Ideas: Consider garnishing with crispy fried shallots or even a dash of truffle oil for an upscale experience.
- Make-Ahead Option: The soup can be made a day in advance and stored in the refrigerator. Just assemble and broil the cheese right before serving.
Nutrition
Frequently Asked Questions
Q1: Can I make this soup vegetarian?
Absolutely! You can easily make a vegetarian version by using vegetable broth instead of chicken stock. Additionally, replace the beef demi-glace with a mushroom-based alternative for rich flavor.
Q2: How long does the soup take to prepare?
The active preparation time is about 15-20 minutes, but the onions take approximately an hour to caramelize properly. Including simmering time, you might spend up to 1.5-2 hours total, but it’s worth every minute!
Q3: Can I prepare the soup ahead of time?
Yes, you can fully prepare the soup a day ahead before adding the cheese and bread. Just reheat it and bake with cheese when you’re ready to serve.
Q4: Is this soup easy to make for beginners?
Definitely! While it requires attention, the steps are straightforward. The most crucial part is caramelizing the onions well, which just demands patience.
Q5: Can I use pre-sliced onions?
You can, but slicing onions yourself provides more control over thickness and flavor release. Plus, there’s satisfaction in the process of chopping them yourself!
Q6: What if I don’t have an oven-safe bowl?
If you lack an oven-safe bowl, simply broil the bread and cheese on a baking sheet instead. Ladle the soup into individual bowls after broiling, and you still have a delicious meal.
Conclusion
Cheesy French onion soup is more than just a dish; it’s a culinary journey from humble ingredients to a bowl full of indulgent goodness. It’s reminiscent of cozy nights, gathering around the table with your loved ones, sharing laughter, and savoring something warm and satisfying.
This recipe is about embracing simplicity while creating something extraordinary. The layers of flavor, the comforting aromas wafting through your kitchen, and that glorious cheese bubbling on top—all will make this a go-to in your recipe rotation.
As you embark on this cooking adventure, remember that every sip tells a story. With your unique touch, you’ll create memories that linger long after the last spoonful. Enjoy!