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French Onion Chicken Orzo Casserole

French Onion Chicken Orzo Casserole

French Onion Chicken Orzo Casserole is warm, creamy, and full of rich onion flavor. This dish brings comfort in every bite.
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Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Course Dinner, Main Dish
Cuisine American, French-inspired
Servings 6
Calories 480 kcal

Ingredients
  

  • 2 cups cooked shredded chicken
  • 1 ½ cups orzo pasta
  • 3 large onions thinly sliced
  • 3 tablespoons butter
  • 2 cloves garlic minced
  • 1 teaspoon salt
  • 1 teaspoon pepper
  • 1 teaspoon thyme
  • 3 cups chicken broth
  • 1 cup shredded Gruyère or Swiss cheese
  • 1 cup shredded mozzarella cheese
  • ½ cup heavy cream
  • 2 tablespoons olive oil
  • Fresh parsley for garnish

Instructions
 

Caramelize the Onions

  • Heat butter and oil in a skillet. Cook sliced onions slowly until golden brown and soft with deep flavor.

Add Garlic and Seasoning

  • Stir in garlic, salt, pepper, and thyme. Mix well so the onions absorb all seasoning and smell wonderful.

Prepare the Orzo

  • Pour orzo into the skillet. Stir with onions to coat each grain with flavor before adding the liquids.

Add Chicken Broth

  • Pour broth into the skillet. Bring to a gentle simmer so the orzo begins softening in rich onion flavor.

Add the Chicken

  • Mix in shredded chicken. Spread it evenly so every bite gets chicken, orzo, and caramelized onion together.

Add the Cream

  • Pour in heavy cream. Stir gently to create a smooth and creamy base that blends beautifully when baked.

Transfer to Baking Dish

  • Pour mixture into a greased baking dish. Spread evenly to help the casserole bake and cook consistently.

Add Cheese Layer

  • Sprinkle Gruyère and mozzarella on top. Cover the whole surface for a rich, melty, and golden finish.

Cover and Bake

  • Cover the dish with foil. Bake at 375°F (190°C) for 25 minutes to soften the orzo and blend flavors.

Remove Foil

  • Take off the foil and bake 15 more minutes. This lets the cheese bubble and turn lightly golden.

Rest Before Serving

  • Let the casserole rest for 10 minutes. This helps it firm up and makes each serving neat and creamy.

Notes

  • Slice onions thin for faster caramelizing and deeper flavor.
  • Use rotisserie chicken for a quicker version of the dish.
  • Add mushrooms for extra richness and a deep earthy taste.
  • Switch the cheese to sharp cheddar for a stronger flavor.
  • Replace cream with half-and-half for a lighter option.
  • Add spinach for a healthy twist and beautiful color.
  • Use beef broth instead of chicken broth for a darker French onion flavor.
Keyword French Onion Chicken Orzo Casserole