French Onion Chicken Casserole Recipe

Previous Next

Cook Time: 35 minutes

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
• 2 cups Gruyere cheese, shredded, divided
• 6 cups chopped rotisserie chicken (from 1 1/2 whole rotisserie chickens)
• 1 (5 ounce) package seasoned croutons

Directions

1. Gather all ingredients and preheat the oven to 350F (175C).
2. Melt butter in a large skillet over medium heat. Add the chopped onion, celery, carrot, garlic, thyme, salt, and pepper. Cook, stirring often, until the onions soften and become translucent, about 5 to 7 minutes.
3. Stir in the French onion soup and white wine. Bring the mixture to a simmer over medium heat and allow it to cook undisturbed for 2 to 3 minutes, until it reduces and thickens slightly.
4. Once the soup mixture is ready, stir in the sour cream, mayonnaise, and Dijon mustard. Bring it back to a simmer, then add 1 cup of shredded Gruyre cheese. Stir constantly until the cheese completely melts and combines into the mixture, about 1 minute.
5. Remove the skillet from heat and fold in the chopped rotisserie chicken, ensuring it is evenly coated with the creamy mixture.
6. Transfer the chicken mixture to a 9x13-inch baking dish, spreading it out evenly.
7. Sprinkle the seasoned croutons evenly over the top of the chicken mixture. Then, sprinkle the remaining Gruyre cheese on top of the croutons.
8. Bake the dish in the preheated oven for 12 to 15 minutes, or until it is bubbling and the cheese has melted and formed a golden crust.
9. Allow the dish to rest for 10 minutes before serving. Garnish with additional thyme and freshly ground black pepper to taste.

Nutrition Facts (per serving)

Amount	% Daily Value
Calories	621
Total Fat	48g (62%)
Saturated Fat	16g (82%)
Cholesterol	109mg (36%)
Sodium	947mg (41%)
Total Carbohydrate	23g (8%)
Dietary Fiber	2g (8%)
Total Sugars	5g
Protein	22g (45%)
Vitamin C	5mg (5%)
Calcium	407mg (31%)
Iron	2mg (9%)
Potassium	366mg (8%)

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Rich Story Behind French Onion Chicken Casserole

The French Onion Chicken Casserole is a modern twist on the timeless French Onion Soup, which has its roots in 18th-century France. Originally, French Onion Soup was a humble dish made from caramelized onions, beef broth, and a topping of crusty bread with melted cheese. Over time, home cooks and chefs alike began experimenting by adding proteins like chicken, creating hearty casseroles that combined the rich flavors of the classic soup with the satisfying texture of baked poultry.

Regional Variations and Adaptations

This casserole, while inspired by French cuisine, has become particularly popular in American kitchens. In the United States, cooks often enhance the dish with ingredients such as Gruyre cheese, mayonnaise, and sour cream, resulting in a creamier and richer texture than the original French version. Regional adaptations may include using different cheeses like Swiss or cheddar, or adding vegetables such as carrots and celery for added depth and nutrition. In some Southern states, a sprinkling of crispy croutons or fried onions on top provides a delightful crunch.

Distinguishing Features from Similar Dishes

French Onion Chicken Casserole differs from classic French Onion Soup and other chicken casseroles in several key ways. Unlike soup, this casserole is baked, producing a golden, bubbly top layer of melted cheese and croutons that adds texture and flavor. Compared to standard chicken casseroles, the French onion version incorporates caramelized onions, wine, and Dijon mustard, giving it a distinctively rich, aromatic, and slightly tangy taste that sets it apart from milder baked chicken dishes.

Common Serving Occasions

This dish is most often served as a comforting main course during family dinners or holiday gatherings. Its hearty nature makes it ideal for cooler months, but it is also popular at potlucks and casual dinner parties. Typically, it is paired with a fresh green salad or steamed vegetables to balance the richness, and a light wine can enhance its savory depth.

Interesting Facts About the Dish

• The casserole can be prepared ahead of time and stored in the refrigerator, making it a convenient option for busy households.
• Using rotisserie chicken not only saves time but adds an extra layer of flavor compared to plain cooked chicken.
• The combination of sour cream, mayonnaise, and Gruyre cheese creates a creamy, luscious sauce that mimics the indulgence of the original French Onion Soup broth.
• Though inspired by French cuisine, the casserole reflects a fusion approach, combining European techniques with American comfort food sensibilities.
• Many variations include topping the casserole with additional herbs, such as thyme or parsley, enhancing both aroma and presentation.

FAQ about French Onion Chicken Casserole Recipe

Comments