Panera Bread French Onion Soup Recipe

This Panera Bread French Onion Soup Recipe is inspired by the savory cafe favorite. It is a rich and aromatic recipe, which calls for sweet caramelized onions and a blend of melted fontina and mozzarella cheeses. It’s a classic, foolproof recipe, ready in about 1 hour 30 minutes.

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Panera Bread French Onion Soup Recipe Ingredients

• 4 large yellow onions, thinly sliced
• 4 tablespoons unsalted butter
• 1 tablespoon olive oil
• 1 teaspoon granulated sugar
• 3 garlic cloves, minced
• 6 cups beef broth (low sodium preferred)
• 1/2 cup dry sherry or dry white wine (optional)
• 1 tablespoon balsamic vinegar
• 1 teaspoon dried thyme
• 1 bay leaf
• Salt and black pepper, to taste
• 1 sourdough baguette, sliced into thick rounds
• 1 cup shredded fontina cheese
• 1/2 cup shredded mozzarella cheese

How To Make Panera Bread French Onion Soup

1. Caramelize the onions: This is the most important step for an authentic Panera flavor. Melt the butter and olive oil in a large Dutch oven or heavy-bottomed pot over medium heat. Add the sliced onions and sprinkle them with sugar. Cook the onions, stirring every few minutes, for about 45–50 minutes. You are looking for the onions to shrink down and turn a deep, rich mahogany brown. If they start to stick too much, add a tablespoon of water to scrape up the browned bits.
2. Aromatics and deglazing: Once the onions are perfectly caramelized, stir in the minced garlic and cook for just 1 minute. If you are using sherry or wine, pour it in now to “deglaze” the pan, using a wooden spoon to scrape all that savory flavor off the bottom. Let the liquid reduce by half.
3. Simmer the broth: Pour in the beef broth and add the balsamic vinegar, dried thyme, and the bay leaf. The balsamic vinegar is the professional secret to Panera’s version; it adds a subtle tang and a beautiful dark color to the broth. Bring the soup to a boil, then reduce the heat to low and simmer, partially covered, for 20 minutes.
4. Prepare the sourdough croutons: While the soup simmers, preheat your oven to 400 F (200 C). Place your sourdough baguette slices on a baking sheet and toast them for about 5 minutes per side until they are golden and very crisp. You want them “stale” enough to hold up the heavy cheese without immediately getting soggy in the soup.
5. Assemble and melt: Remove the bay leaf from the soup and taste for seasoning, adding salt and pepper as needed. Ladle the hot soup into oven-safe bowls. Place a toasted sourdough slice (or two) on top of each bowl. Generously cover the bread with the fontina and mozzarella cheese blend.
6. Broil to a bubble: Place the soup bowls on a baking sheet and slide them under the broiler for 2–4 minutes. Watch them closely! You want the cheese to be melted, bubbly, and spotted with brown patches. Serve immediately while the cheese is gooey and the broth is steaming.

Recipe Tips

• How to speed up caramelization: While there are no real shortcuts for deep flavor, adding that teaspoon of sugar helps the natural sugars in the onions break down and brown more evenly.
• Why fontina and mozzarella are used: Panera uses a specific blend that includes fontina for its buttery, nutty flavor and mozzarella for that iconic, stretchy cheese pull we all love.
• Can I make this vegetarian: Yes, simply swap the beef broth for a high-quality mushroom or vegetable broth and add a teaspoon of soy sauce for that “umami” depth usually provided by the beef.
• How to avoid bitter onions: Ensure the heat isn’t too high. If the onions burn instead of caramelizing, they will turn the entire soup bitter. Keep it at a steady medium or medium-low.

What To Serve With Panera Bread French Onion Soup?

This Panera Bread French Onion Soup Recipe is a rich, aromatic main dish that needs a crunchy or fresh pairing! A thick slice of Toasted Sourdough is the quintessential choice for a traditional French onion experience. For a balanced meal, a side of Honey Mustard Tossed Salad or a classic Caesar Salad adds a lovely crispness that cuts through the savory broth! A cup of Broccoli Cheddar Soup or a serving of Roasted Asparagus pairs wonderfully with the sweet, caramelized notes of the onions.

How To Store Panera Bread French Onion Soup

• Refrigerate: Store the soup (without the bread and cheese topping) in an airtight container for up to 4 days. The flavors actually deepen after a day in the fridge.
• Freeze: The onion broth freezes perfectly for up to 3 months. Let it cool completely before freezing. Always add the bread and cheese fresh when you are ready to serve after thawing and reheating.

Panera Bread French Onion Soup Nutrition Facts

• Calories: 310 (per serving with bread and cheese)
• Total Fat: 16g
• Cholesterol: 45mg
• Sodium: 920mg
• Total Carbohydrates: 28g
• Dietary Fiber: 3g
• Protein: 14g

Nutrition information is estimated and may vary based on ingredients and cooking methods used.

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