Ah, French onion soup—its name alone conjures up images of cozy bistros in Paris and the tantalizing aroma of slowly caramelized onions. I remember the first time I tasted it; I was mesmerized by its rich flavor, balanced by the creaminess of melted cheese on top. Then I wondered, why not recreate that magic at home? After some experimentation, I developed my version that honors the classic Panera recipe.
This meal is warm, comforting, and perfect for any occasion. Whether it’s a chilly evening or a holiday gathering, this soup warms the soul. In this post, I will guide you through my recipe for Panera-style French onion soup, explaining why it works and giving you the insider tips and tricks to get it just right.

What is Panera French Onion Soup?
The essence of Panera French onion soup lies in the ingredients. At its core, it features three main components: caramelized onions, rich broth, and delectable cheese. It’s all about layering flavors. Starting with the onions, which you cook until they reach a deep golden brown, you create a base that is sweet and savory. The broth then adds depth, while the cheese on top becomes a gourmet finishing touch as it bubbles and browns under the broiler.
Why This Recipe Works
Rich Flavor Profile: The combination of beef and chicken broth amplifies the soup’s flavor.
Perfect Texture: The toastiness of croutons paired with melted cheese creates a delightful contrast.
Simple Ingredients: Using everyday items makes the recipe accessible to everyone.
Quick Prep Time: Though it tastes like a restaurant dish, the preparation is simple, allowing you to enjoy it without spending hours in the kitchen.
What You’ll Need to Make This Dish
Gather the following ingredients to create this sumptuous French onion soup:
- 1 tablespoon all-purpose flour
- 4 pounds yellow onions, finely diced
- 1 teaspoon sea salt
- 32 ounces rich beef broth
- 14.5 ounces chicken broth
- 2 tablespoons concentrated beef stock
- 1/2 teaspoon dried thyme
- 4 tablespoons unsalted butter
- 1 cup toasted croutons
- 1/4 cup shredded Gruyère cheese
- 1 tablespoon grated Asiago cheese
- 1/2 teaspoon smoked paprika
- 1 bay leaf

How to Make Panera French Onion Soup
A brief introduction to the process: creating French onion soup involves three main stages—caramelizing the onions, preparing the broth, and then assembling the soup with toppings. It’s simpler than it sounds and incredibly rewarding!
Step-by-Step Instructions
Step 1: Caramelizing the Onions
Begin by melting the butter in a large pot over medium heat. Once melted, toss in the diced onions and sprinkle with sea salt. The salt will help to draw out moisture, allowing the onions to soften. Stir the mixture every few minutes. After about 10 minutes, reduce the heat to medium-low and keep stirring periodically. You want the onions to turn a deep golden color, which should take around 30 to 40 minutes. This slow cooking is key to developing sweetness and depth.
Step 2: Adding the Flour and Seasoning
Once the onions have caramelized nicely, sprinkle the flour over them. Stir continuously for about a minute to eliminate the raw flour taste. The flour will help thicken our soup. Next, add the dried thyme, smoked paprika, and the bay leaf. Stir to incorporate and let the herbs bloom in the heat.
Step 3: Mixing the Broths
Gradually pour in the beef broth and chicken broth, ensuring you stir well to combine everything. Add the concentrated beef stock. Bring the mixture to a gentle simmer. Allow it to cook for 20 to 30 minutes, which will deepen the flavors. Stir occasionally to keep things moving along smoothly.
Step 4: Preparing the Topping
While your soup simmers, prepare the toppings. Toast your croutons under the broiler or in the oven until crisp. In a separate bowl, combine the Gruyère and Asiago cheeses.
Step 5: Assembling the Soup
Remove the bay leaf from the soup. In oven-safe bowls, ladle the soup, filling them nearly to the brim. Place a toasted crouton on top of each portion, then generously sprinkle the cheese mixture over the croutons.
Step 6: Broiling to Perfection
Place the bowls on a baking sheet and put them under the broiler. Keep an eye on them! Broil for 3-5 minutes, or until the cheese is bubbly and golden brown. It’s key to serve immediately, as this soup is best enjoyed fresh out of the oven.
Tips for Perfecting Your Soup
Onion Variety: Yellow onions provide the best flavor, but you can mix in some sweet onions for added sweetness.
Slow and Steady: Keep the heat low during caramelization for the best results. Quick cooking will burn the onions rather than caramelize them.
Broth Quality: Use high-quality beef and chicken broth for the richest flavor. If you can, homemade stock is a game-changer!
Cheese Choices: Gruyère is traditional, but feel free to mix it up with Fontina or even Mozzarella for a gooey texture.
Make Ahead: You can make the soup a day in advance and store it. When ready to serve, add the croutons and cheese, then broil.
How to Store Leftovers
Leftover soup can last in the fridge for 3-4 days. Store it in airtight containers. When reheating, it’s best to reheat without croutons or cheese added, as they won’t hold up well. You can always top it off with fresh croutons and cheese before broiling again.
How Would I Recommend Serving Panera French Onion Soup Recipe?
- With a Side Salad: A simple green salad with vinaigrette offers refreshing contrast.
- Grilled Cheese Sandwich: A gooey grilled cheese takes comfort food to the next level, perfect for dipping!
- Bruschetta: Top toasted baguette slices with a mixture of tomatoes, garlic, and basil; it’s a fresh pairing for the warm soup.
- Roasted Vegetables: Serve alongside a mix of roasted vegetables for a colorful, nutritious side.
What Alternatives Can You Use for the Ingredients if Not Available?
- Onions: Shallots can serve as a substitute, giving a milder flavor.
- Broth: Vegetarian broth can replace beef and chicken broth for a meatless version.
- Cheese: If Gruyère isn’t available, Emmental or Swiss cheese can be used.
- Croutons: Pita chips can serve as an alternative topping, adding a different crunch and flavor.

Conclusion
French onion soup is a culinary delight that warms the heart and fills the belly. By creating my version of the Panera classic, I’ve learned how to balance flavors and textures beautifully. From the caramelized onions to the melted cheese, each step enhances the harmony of this dish.
So, fire up your kitchen, gather some friends, and make this incredible soup. I guarantee it will become a favorite in your cookbook. Remember, cooking is not just about the meal—it’s about the experience, the joy of sharing, and those unforgettable moments gathered around the table. Enjoy each spoonful!
Panera French Onion Soup Recipe – Gourmet And Food
Description
Before we dive into the delightful world of French onion soup, let’s talk about what makes it even better. This dish can stand on its own, but pairing it with the right sides can elevate the experience. With this soup, crusty bread is a natural companion. Picture this: a warm bowl of soup, crowned with toasted cheese, contrasted with the crunch of fresh baguette. It’s a classic combination.
Another splendid pairing is a simple green salad. A mix of arugula, spinach, and a tangy vinaigrette balances the richness of the soup. And for those of you looking to impress your guests, a charcuterie board offers a variety of flavors and textures. Think cured meats, cheeses, and pickled vegetables—the perfect way to open up the appetite.
If you're feeling adventurous, consider a light, fruity white wine such as Sauvignon Blanc. It can bring out the flavors of caramelized onions beautifully.
Ingredients
Instructions
Step 1: Caramelizing the Onions
-
Begin by melting the butter in a large pot over medium heat. Once melted, toss in the diced onions and sprinkle with sea salt. The salt will help to draw out moisture, allowing the onions to soften. Stir the mixture every few minutes. After about 10 minutes, reduce the heat to medium-low and keep stirring periodically. You want the onions to turn a deep golden color, which should take around 30 to 40 minutes. This slow cooking is key to developing sweetness and depth.
Step 2: Adding the Flour and Seasoning
-
Once the onions have caramelized nicely, sprinkle the flour over them. Stir continuously for about a minute to eliminate the raw flour taste. The flour will help thicken our soup. Next, add the dried thyme, smoked paprika, and the bay leaf. Stir to incorporate and let the herbs bloom in the heat.
Step 3: Mixing the Broths
-
Gradually pour in the beef broth and chicken broth, ensuring you stir well to combine everything. Add the concentrated beef stock. Bring the mixture to a gentle simmer. Allow it to cook for 20 to 30 minutes, which will deepen the flavors. Stir occasionally to keep things moving along smoothly.
Step 4: Preparing the Topping
-
While your soup simmers, prepare the toppings. Toast your croutons under the broiler or in the oven until crisp. In a separate bowl, combine the Gruyère and Asiago cheeses.
Step 5: Assembling the Soup
-
Remove the bay leaf from the soup. In oven-safe bowls, ladle the soup, filling them nearly to the brim. Place a toasted crouton on top of each portion, then generously sprinkle the cheese mixture over the croutons.
Step 6: Broiling to Perfection
-
Place the bowls on a baking sheet and put them under the broiler. Keep an eye on them! Broil for 3-5 minutes, or until the cheese is bubbly and golden brown. It’s key to serve immediately, as this soup is best enjoyed fresh out of the oven.
Nutrition Facts
Servings 8
- Amount Per Serving
- Calories 221kcal
- % Daily Value *
- Total Fat 4.6g8%
- Saturated Fat 2.1g11%
- Cholesterol 40mg14%
- Sodium 579mg25%
- Total Carbohydrate 31g11%
- Dietary Fiber 2g8%
- Sugars 12g
- Protein 15g30%
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.
Note
- Onion Variety: Yellow onions provide the best flavor, but you can mix in some sweet onions for added sweetness.
- Slow and Steady: Keep the heat low during caramelization for the best results. Quick cooking will burn the onions rather than caramelize them.
- Broth Quality: Use high-quality beef and chicken broth for the richest flavor. If you can, homemade stock is a game-changer!
- Cheese Choices: Gruyère is traditional, but feel free to mix it up with Fontina or even Mozzarella for a gooey texture.
- Make Ahead: You can make the soup a day in advance and store it. When ready to serve, add the croutons and cheese, then broil.
