French Onion Chicken Casserole

French Onion Chicken Casserole

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A deliciously cheesy and flavorful dish, this French Onion Chicken Casserole brings all the comforting flavors of French onion soup into a hearty, baked meal.

Ingredients:

For the Chicken:

  • 2 lbs (900g) boneless, skinless chicken breasts, cut into bite-sized pieces
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • ½ teaspoon garlic powder
  • 2 tablespoons olive oil

For the Onion Mixture:

  • 2 large onions, thinly sliced
  • 2 tablespoons butter
  • 1 teaspoon sugar
  • ½ teaspoon salt
  • ½ teaspoon black pepper
  • 1 teaspoon fresh thyme (or ½ teaspoon dried)
  • ½ cup (120ml) beef broth
  • 1 teaspoon balsamic vinegar

For the Casserole:

  • 1 cup (240ml) heavy cream
  • ½ cup (120ml) sour cream
  • 1 teaspoon Dijon mustard
  • 1 teaspoon Worcestershire sauce
  • 2 cups (200g) shredded Gruyère or Swiss cheese
  • 1 cup (60g) French-fried onions (for topping)
  • ½ cup (30g) panko breadcrumbs (optional, for extra crunch)

Instructions:

Step 1: Cook the Chicken

  1. Preheat oven to 375°F (190°C).
  2. Season chicken with salt, pepper, and garlic powder.
  3. Heat olive oil in a large skillet over medium heat.
  4. Add chicken and cook until golden brown, about 5-6 minutes per side.
  5. Remove from heat and set aside.

Step 2: Caramelize the Onions

  1. In the same skillet, melt butter over medium-low heat.
  2. Add sliced onions, sugar, salt, and black pepper.
  3. Cook, stirring occasionally, for 20-25 minutes until deep golden brown.
  4. Stir in thyme, beef broth, and balsamic vinegar. Cook for another 2 minutes until liquid reduces.
  5. Remove from heat.

Step 3: Prepare the Casserole

  1. In a large mixing bowl, combine heavy cream, sour cream, Dijon mustard, and Worcestershire sauce.
  2. Stir in half of the shredded cheese and mix well.
  3. Add cooked chicken and caramelized onions to the mixture, stirring to coat evenly.
  4. Transfer the mixture to a greased 9×13-inch (23×33 cm) baking dish.
  5. Sprinkle the remaining cheese over the top.
  6. Top with French-fried onions and panko breadcrumbs (if using).

Step 4: Bake

  1. Bake for 25-30 minutes until the cheese is bubbly and golden brown.
  2. Let it rest for 5 minutes before serving.

Tips for the Best French Onion Chicken Casserole

  1. Slowly Caramelize the Onions: Low and slow cooking is key for deep, sweet flavor.
  2. Use Good Cheese: Gruyère or Swiss cheese gives an authentic, rich taste.
  3. Crispy Topping: French-fried onions and panko add a delicious crunch.

Nutrition Facts (Per Serving):

  • Calories: 520 kcal
  • Protein: 45g
  • Carbohydrates: 18g
  • Fat: 30g
  • Fiber: 2g
  • Sugar: 5g

Enjoy this rich, comforting French Onion Chicken Casserole! 🧅🧀🍗

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