French Onion Chicken Soup (Printable Version)

Tender chicken and caramelized onions meld in a savory broth with Gruyère cheese toasts.

# What You'll Need:

→ Soup

01 - 3 pounds yellow onions, peeled, halved, and thinly sliced
02 - 6 tablespoons unsalted butter, divided
03 - 1 teaspoon dried thyme
04 - 2 dried bay leaves
05 - 2 1/2 teaspoons kosher salt, divided, plus more to taste
06 - 1/2 teaspoon freshly ground black pepper
07 - 3 medium carrots, peeled and sliced into 1/4-inch rounds (approx. 1 1/4 cups)
08 - 3 medium celery stalks, cut into 1/4-inch pieces (approx. 1 cup)
09 - 3 cloves garlic, minced
10 - 2 pounds boneless, skinless chicken breasts or thighs, seasoned
11 - 3/4 cup dry white wine
12 - 1 tablespoon dry sherry
13 - 1/4 cup all-purpose flour
14 - 6 cups low-sodium chicken broth

→ Cheesy Toasts (Optional)

15 - 1/2 baguette, cut diagonally into 1-inch-thick slices (about 8 slices)
16 - 2 ounces Gruyère cheese, grated (about heaping 1/2 cup)

# Step-by-Step Guide:

01 - Melt 4 tablespoons butter in a large heavy pot over medium heat. Add sliced onions, dried thyme, bay leaves, 1 1/2 teaspoons kosher salt, and black pepper. Cook, stirring frequently and scraping the bottom, until onions are tender and deep amber, approximately 35 to 45 minutes.
02 - While onions cook, peel and slice carrots, cut celery, and mince garlic. Set aside.
03 - Add the remaining 2 tablespoons butter to the pot. Once melted, stir in carrots, celery, and garlic. Cook occasionally stirring until vegetables are crisp-tender and vibrant, about 5 minutes.
04 - Season chicken breasts or thighs evenly with remaining 1 teaspoon kosher salt. Butterfly thick breasts as needed for uniform cooking.
05 - Pour white wine and dry sherry into the pot. Stir occasionally and cook until mostly evaporated, about 2 to 3 minutes.
06 - Sprinkle flour evenly over the mixture and cook, stirring constantly, for 1 minute to remove raw flavor.
07 - Gradually pour in chicken broth while stirring. Add chicken in a single layer and bring to a lively simmer on medium-high heat.
08 - Reduce heat to maintain a gentle simmer. Stir and scrape the bottom occasionally. Cook until chicken reaches an internal temperature of 165°F, approximately 10 minutes for thighs or 12 to 20 minutes for breasts.
09 - Position oven rack 3 to 4 inches from broiler. Place baguette slices topped with Gruyère on a rimmed baking sheet and broil until cheese melts and bubbles, about 30 seconds to 1 minute.
10 - Transfer chicken to a board and shred with forks. Return shredded chicken to pot, remove bay leaves, and adjust seasoning to taste.
11 - Ladle soup into bowls, topping each with a cheesy toast slice if desired. Serve hot for a comforting meal.

# Additional Notes:

01 - Slow caramelization of onions enhances sweetness and depth of flavor.