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French Onion Chicken Soup Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.9 from 82 reviews
  • Author: Jessica
  • Prep Time: 20 minutes
  • Cook Time: 1 hour 25 minutes
  • Total Time: 1 hour 45 minutes
  • Yield: About 11 cups, serves 8
  • Category: Soup
  • Method: Stovetop
  • Cuisine: French

Description

Delicious French Onion Chicken Soup combines the rich sweetness of caramelized yellow onions with tender shredded chicken in a savory broth, enhanced by white wine, sherry, and herbs. Topped with optional Gruyère cheese toasts broiled to perfection, this comforting dish makes a hearty meal perfect for gatherings or cozy nights.


Ingredients

Scale

For the Soup:

  • 3 pounds yellow onions (4 large or 6 medium), peeled, halved, and thinly sliced
  • 6 tablespoons unsalted butter, divided
  • 1 teaspoon dried thyme
  • 2 dried bay leaves
  • 2 1/2 teaspoons kosher salt, divided, plus more as needed
  • 1/2 teaspoon freshly ground black pepper
  • 3 medium carrots, peeled and cut into 1/4-inch-thick rounds (about 1 1/4 cups)
  • 3 medium celery stalks, cut into 1/4-inch-thick pieces (about 1 cup)
  • 3 cloves garlic, minced
  • 2 pounds boneless, skinless chicken breasts or thighs, seasoned
  • 3/4 cup dry white wine
  • 1 tablespoon dry sherry
  • 1/4 cup all-purpose flour
  • 6 cups low-sodium chicken broth

For the Cheesy Toasts (Optional):

  • 1/2 baguette, cut crosswise on a bias into 1-inch-thick slices (about 8 slices)
  • 2 ounces Gruyère cheese (about heaping 1/2 cup), grated


Instructions

  1. Prepare the Onions: Peel, halve, and thinly slice the onions. Melt 4 tablespoons of butter in a Dutch oven or large heavy pot over medium heat. Add onions, dried thyme, bay leaves, 1 1/2 teaspoons kosher salt, and black pepper. Cook stirring often and scraping bottom to prevent burning, until onions are soft and amber brown, about 35 to 45 minutes.
  2. Prepare Vegetables: While onions cook, prepare carrots, celery, and garlic by slicing and mincing respectively. Add these to a medium bowl as you finish each.
  3. Add Vegetables to Onions: Add remaining 2 tablespoons butter to the onion mixture. Once melted, add the prepared carrots, celery, and garlic. Cook, stirring occasionally, until vegetables are crisp-tender and bright, about 5 minutes.
  4. Season Chicken: Season chicken breasts or thighs with remaining 1 teaspoon kosher salt. Butterfly thick breasts if needed for even cooking.
  5. Deglaze Pot: Pour white wine and dry sherry into the pot. Cook, stirring occasionally, until mostly evaporated, about 2 to 3 minutes.
  6. Add Flour: Sprinkle flour over the mixture and cook, stirring constantly, for 1 minute to eliminate raw flour taste.
  7. Add Broth and Chicken: Stir in chicken broth gradually while stirring. Add chicken to pot in a single layer and bring to a lively simmer over medium-high heat.
  8. Simmer Soup: Reduce heat to maintain a gentle simmer. Cook, stirring and scraping bottom occasionally, until chicken reaches 165°F internally—about 10 minutes for thighs or 12 to 20 minutes for breasts.
  9. Prepare Cheesy Toasts: If desired, arrange oven rack 3 to 4 inches below broiler. Broil baguette slices topped with Gruyère cheese on a rimmed baking sheet until cheese melts and bubbles, 30 seconds to 1 minute.
  10. Shred Chicken and Finalize Soup: Transfer chicken to a cutting board, shred with forks, then return to pot. Remove bay leaves. Taste and adjust seasoning as needed.
  11. Serve: Ladle soup into bowls, topping each with a cheesy toast slice if using. Enjoy hot for a comforting meal.

Notes

  • Storage: Store leftover soup in an airtight container in the refrigerator for up to 4 days or freeze for up to 3 months.
  • Butterflying thick chicken breasts ensures even cooking throughout.
  • Use a wooden spoon to prevent onions from burning and to scrape fond off the pot bottom for rich flavor.
  • Use low-sodium chicken broth to control salt levels in the soup.
  • Gruyère cheese provides a classic French onion soup flavor but substituting with Swiss cheese is possible.

Nutrition

  • Serving Size: 1 cup
  • Calories: 280
  • Sugar: 7g
  • Sodium: 580mg
  • Fat: 12g
  • Saturated Fat: 7g
  • Unsaturated Fat: 4g
  • Trans Fat: 0g
  • Carbohydrates: 22g
  • Fiber: 3g
  • Protein: 25g
  • Cholesterol: 75mg