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French Onion Chicken Orzo Casserole

French onion chicken orzo casserole with deeply caramelized onions and a creamy orzo-chicken bake topped with golden Gruyere. The method simmers orzo in broth and wine, melts cream cheese for richness, then finishes in the oven until bubbly and browned.
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Prep Time 20 minutes
Cook Time 50 minutes
Total Time 1 hour 10 minutes
Servings: 6 servings
Course: Main Dish
Cuisine: French-American
Calories: 650
Ingredients Equipment Method Notes

Ingredients
  

Chicken and aromatics
  • 1.5 lb chicken breast Dice before cooking.
  • 2 onions Thinly sliced for caramelizing.
  • 4 garlic Minced.
  • 1 tsp dried thyme Use as directed.
Orzo base
  • 1.5 cup orzo pasta Uncooked.
  • 3 cup beef broth Low-sodium if desired; season later to taste.
  • 1 cup dry white wine Use for deglazing and flavor.
  • 8 oz cream cheese Cubed for easier melting.
  • 1 tbsp Worcestershire sauce Adds savory depth.
  • 3 tbsp unsalted butter For caramelizing onions.
Cheese topping and finishing
  • 2 cup Gruyere cheese Shredded; reserve for topping.
  • 1 fresh thyme For garnish.
  • 0.25 salt and pepper To taste; add during seasoning step.

Equipment

  • 1 cast iron skillet

Method
 

Preheat and caramelize the onions
  1. Preheat oven to 375F.
  2. Melt butter in a large oven-safe skillet over medium heat, then cook onions 30-35 minutes until deeply caramelized with dark golden edges.
Build the flavor base
  1. Add garlic and dried thyme and cook 2 minutes, stirring, until fragrant.
  2. Add dry white wine and cook 2 more minutes to reduce slightly.
  3. Add beef broth, Worcestershire sauce, and uncooked orzo, stirring in diced chicken until evenly combined.
Simmer and finish with cheese
  1. Bring the mixture to a simmer and stir in cream cheese until fully melted and creamy.
  2. Season with salt and pepper to taste, then scatter Gruyere over the top in an even layer.
  3. Bake 25-30 minutes until orzo is cooked, chicken is done, and the cheese is golden and bubbling at the edges, then garnish with fresh thyme before serving.

Notes

For the best texture, caramelize the onions until very dark and jammy—this is where the casserole gets its deep French-onion flavor. Store leftovers in the fridge up to 3 days; reheat in a 325F oven or microwave until hot. Freezing is not recommended because the cream cheese can change texture when thawed. Dietary swap: use gluten-free orzo (uncooked) and keep an eye on bake time by a few minutes as needed.