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French Onion Chicken Orzo Casserole

  • Author: madison
  • Prep Time: 15 minutes
  • Cook Time: 40 minutes
  • Total Time: 55 minutes
  • Yield: 6 servings
  • Category: Main Course
  • Method: Baking
  • Cuisine: French
  • Diet: Gluten-Free

Description

A comforting one-pan meal that combines tender orzo pasta, savory chicken, and sweet caramelized onions, all topped with gooey cheese.


Ingredients

  • 2 tablespoons unsalted butter
  • 1 tablespoon olive oil
  • 2 large yellow onions, thinly sliced
  • 1 teaspoon sugar
  • 1/2 teaspoon salt
  • 3 garlic cloves, minced
  • 1 1/2 cups orzo pasta
  • 2 cups cooked shredded chicken
  • 1/2 teaspoon dried thyme
  • 1/4 teaspoon black pepper
  • 2 cups low-sodium chicken broth
  • 1 cup heavy cream
  • 1 1/2 cups shredded mozzarella cheese
  • 1/2 cup grated Parmesan cheese
  • Optional: 1/2 teaspoon Worcestershire sauce or balsamic glaze


Instructions

  1. Begin by caramelizing the onions. In your skillet or Dutch oven, melt the unsalted butter and olive oil over medium heat.
  2. Add the sliced onions, sugar, and salt. Allow them to cook for about 20–25 minutes, stirring occasionally until they become deeply golden and caramelized.
  3. Add the minced garlic in the last 1–2 minutes to enhance the aroma.
  4. Once the onions are ready, stir in the orzo and let it toast for about 2 minutes.
  5. Then, incorporate the shredded chicken, dried thyme, black pepper, and Worcestershire sauce if you’re using it. Mix everything well.
  6. Next, pour in the chicken broth and heavy cream, bringing the mixture to a gentle simmer.
  7. Reduce the heat to low, cover, and let it cook for 8–10 minutes.
  8. After the orzo has become tender, stir in 1 cup of mozzarella cheese along with the grated Parmesan.
  9. Continue mixing until everything melts into a creamy, cheesy goodness.
  10. Preheat your oven to 375°F (190°C), then sprinkle the remaining mozzarella over the top.
  11. Bake the casserole uncovered for about 10–15 minutes, or until it becomes bubbly and golden.
  12. Let the casserole rest for 5–10 minutes before serving.

Notes

Optional: Garnish with fresh thyme or parsley before serving. For a deeper flavor, consider adding Worcestershire sauce or balsamic glaze.