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–+ servings

French Onion Chicken Casserole

This French onion chicken casserole is creamy, rich, and aromatic. It has all the components of French onion soup—plus chicken—even a crisp crouton topping.
Print Recipe
Prep Time 15 minutes
Cook Time 35 minutes
Total Time 1 minute
Servings: 8 servings
Course: Dinner, Entree
Cuisine: American
Calories: 621
Ingredients Method Nutrition

Ingredients
  

Ingredients
  • 2 tablespoons unsalted butter
  • 1 1/2 cups chopped yellow onion
  • 1/2 cup chopped celery
  • 1/2 cup chopped carrot
  • 1 tablespoon finely chopped fresh garlic
  • 2 teaspoons fresh thyme leaves, plus more for garnish
  • 1 teaspoon kosher salt
  • 1 teaspoon freshly ground black pepper, plus more for garnish
  • 1 10.5 ounce can condensed French onion soup
  • 1/4 cup dry white wine
  • 1 cup sour cream
  • 1 cup mayonnaise
  • 1 teaspoon Dijon mustard
  • 8 ounces Gruyère cheese, shredded about 2 cups
  • 6 cups chopped rotisserie chicken, from 2 2 pound rotisserie chickens
  • 1 5 ounce package seasoned croutons or 1 (4.23 ounce package bruschettini

Method
 

  1. Gather all ingredients. Preheat the oven to 350 degrees F (175 degrees C).
  2. Melt butter in a large skillet over medium heat. Add onion, celery, carrot, garlic, thyme, salt, and pepper; cook, stirring often, until onions are softened and translucent, 5 to 7 minutes.
  3. Add French onion soup and wine, and bring to a simmer over medium heat. Simmer, undisturbed, until reduced and slightly thickened, 2 to 3 minutes. Stir in sour cream, mayonnaise, and mustard, and return to a simmer. Add 1 cup Gruyère, and cook, stirring constantly, until completely melted and combined, about 1 minute. Remove from heat, and fold in chicken.
  4. Transfer to a 9x13-inch baking dish. Sprinkle croutons evenly over chicken mixture; sprinkle evenly with remaining Gruyère cheese. Bake in the preheated oven until bubbling and cheese is melted, 12 to 15 minutes. Let rest 10 minutes before serving. Garnish with additional thyme and pepper. Recipe developed by Craig Ruff

Nutrition

Calories: 621kcalCarbohydrates: 23gProtein: 22gFat: 48gSaturated Fat: 16gCholesterol: 109mgSodium: 947mgFiber: 2gSugar: 5g

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