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French Onion Chicken Orzo Casserole

A comforting and hearty casserole that features the rich flavors of French onion soup blended with tender chicken and creamy orzo pasta, perfect for family dinners.
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Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Servings: 6 servings
Course: Dinner, Main Course
Cuisine: American
Calories: 450
Ingredients Method Notes

Ingredients
  

For the base
  • 2 tablespoons unsalted butter
  • 1 tablespoon olive oil
  • 2 large yellow onions (thinly sliced)
  • 1 teaspoon sugar
  • 1/2 teaspoon salt
  • 3 cloves garlic (minced)
For the casserole
  • 1 1/2 cups orzo pasta
  • 2 cups cooked shredded chicken (rotisserie works well)
  • 1/2 teaspoon dried thyme
  • 1/4 teaspoon black pepper
  • 2 cups low-sodium chicken broth
  • 1 cup heavy cream (or half and half for a lighter option)
  • 1 1/2 cups shredded mozzarella cheese
  • 1/2 cup grated Parmesan cheese
  • 1/2 teaspoon Worcestershire sauce (optional, for added depth)

Method
 

Caramelize the Onions
  1. In a large oven-safe skillet or Dutch oven, melt the butter and olive oil over medium heat.
  2. Add the sliced onions, sugar, and salt. Cook for approximately 20 to 25 minutes while stirring occasionally, until deeply golden and caramelized.
  3. For the last 1 to 2 minutes, incorporate the minced garlic for added flavor.
Add Orzo and Chicken
  1. Stir in the orzo and cook for about 2 minutes to give it a light toasting.
  2. Next, add the shredded chicken, dried thyme, black pepper, and Worcestershire sauce if using. Mix thoroughly to combine all the ingredients.
Pour in Liquids
  1. Pour in the chicken broth and heavy cream. Bring the mixture to a gentle simmer.
  2. Once bubbling, reduce the heat to low, cover, and cook for about 8 to 10 minutes, stirring occasionally until the orzo is tender to your liking.
Add Cheese
  1. Gently mix in 1 cup of the mozzarella and the grated Parmesan cheese until they melt and create a creamy texture throughout the mixture.
Bake the Casserole
  1. Preheat your oven to 375°F (190°C).
  2. Sprinkle the remaining 1/2 cup of mozzarella over the top of the casserole.
  3. Bake uncovered for about 10 to 15 minutes or until bubbly and golden on top.
Serve
  1. Once baked, allow the casserole to sit for about 5 to 10 minutes before serving.
  2. Garnish with fresh thyme or parsley for an extra touch.

Notes

This casserole can be made ahead and baked just before serving. It pairs wonderfully with a side salad or steamed vegetables.