For a deeper flavor, caramelize the onions for a longer period. Watch carefully to prevent burning. If you don't have rotisserie chicken, you can use about 1 1/2 pounds of cooked chicken breast, shredded. For a richer casserole, use heavy cream instead of sour cream and mayonnaise. Feel free to experiment with different cheeses. Fontina or provolone would be delicious substitutes for Gruyère. Prepare the casserole ahead of time and bake it just before serving. Assemble up to the point of baking, cover tightly, and refrigerate for up to 24 hours. Add an additional 5-10 minutes to the baking time if starting with a cold casserole.
French Onion Chicken Casserole
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PREP TIME15 mins
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COOK TIME35 mins
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TOTAL TIME1 hrs
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SERVING8 People
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VIEWS14
Imagine the comforting flavors of French onion soup, elevated with tender chicken and a perfectly crisp, cheesy topping. This casserole is a delightful fusion of classic flavors and textures, perfect for a satisfying meal.
Ingridients
Adjust Servings
Nutrition
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Carbohydrate23 g
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Cholesterol109 mg
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Fiber2 g
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Protein22 g
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Saturated Fat16 g
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Sodium947 mg
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Sugar5 g
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Fat48 g
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Unsaturated Fat0 g
Follow The Directions
01
StepPreheat the oven to 350 degrees F (175 degrees C). (5 minutes)
02
StepMelt 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. (5-7 minutes)
03
StepAdd French onion soup and wine, and bring to a simmer over medium heat. Simmer, undisturbed, until reduced and slightly thickened. (2-3 minutes)
04
StepStir in sour cream, mayonnaise, and mustard, and return to a simmer. Add 1 cup Gruyère, and cook, stirring constantly, until completely melted and combined. (1 minute)
05
StepRemove from heat, and fold in chicken.
06
StepTransfer to a 9x13-inch baking dish. Sprinkle croutons evenly over chicken mixture; sprinkle evenly with remaining Gruyère cheese.
07
StepBake in the preheated oven until bubbling and cheese is melted. (12-15 minutes)
08
StepLet rest 10 minutes before serving. Garnish with additional thyme and pepper.
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Lenore Kiehn
Jul 2, 2025I appreciate the tips about caramelizing the onions and using different cheeses. Very helpful!
Alessandra Schinner
Jul 1, 2025The crouton topping is genius! It adds such a nice crunch to the casserole.
Dereck Boehm
Jun 30, 2025This is the best chicken casserole I've ever made! The French onion soup flavor is spot on.
Antwan Larson
Jun 27, 2025This recipe is a keeper! Thank you for sharing!
Domenica Franecki
Jun 27, 2025My family devoured this casserole in one sitting! It's definitely going into our regular rotation.
Aryanna Mclaughlin
Jun 21, 2025I added a splash of sherry to the onion mixture and it gave it a wonderful depth of flavor.
Concepcion Reichert
Jun 19, 2025I love how simple this recipe is. It's perfect for a busy weeknight meal.
Amelia Kutch
Jun 19, 2025I substituted the Gruyère with Swiss cheese and it turned out great. Thanks for the easy and delicious recipe!
Gregorio Macgyver
Jun 18, 2025I made this for a potluck and it was a huge hit! Everyone loved the cheesy topping and the flavorful filling.
Diamond Erdman
Jun 13, 2025This recipe is amazing! It's so easy to make and tastes just like French onion soup, but even better with the chicken.