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Delicious French Onion Chicken Orzo Casserole topped with melted cheese.

French Onion Chicken Orzo Casserole

A hearty, savory one-dish meal that combines caramelized onions, orzo, chicken, and melted cheese for a creamy finish.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 6 servings
Course: Casserole, Main Course
Cuisine: American, French
Calories: 500
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 2 medium Onions, thinly sliced They form the base and sweet flavor.
  • 2 tablespoons Butter Used for browning and flavor.
  • 1 tablespoon Olive oil Prevents the butter from burning.
  • 1 teaspoon Sugar Helps the onions caramelize evenly.
  • 1 teaspoon Salt Helps the onions caramelize evenly.
  • 2 cloves Garlic, minced Added at the end for fresh aroma.
  • 1 cup Orzo Small pasta that absorbs the sauce.
  • 2 cups Cooked shredded chicken Adds protein and texture.
  • 1 teaspoon Thyme Simple herb for seasoning.
  • 1/2 teaspoon Pepper Simple spice for seasoning.
  • 1 tablespoon Worcestershire sauce Optional for depth of flavor.
  • 2 cups Chicken broth Forms the cooking liquid and sauce.
  • 1 cup Heavy cream Forms the cooking liquid and sauce.
  • 2 cups Mozzarella cheese Melt into a creamy topping.
  • 1 cup Parmesan cheese, grated Melt into a creamy topping.
  • 2 tablespoons Fresh herbs for garnish Parsley or thyme brighten the dish.

Method
 

Caramelize the Onions
  1. Heat butter and oil in an oven-safe skillet over medium heat.
  2. Add sliced onions, sugar, and salt, and cook, stirring occasionally until deep golden.
  3. Stir in garlic in the last minute.
Add Orzo and Chicken
  1. Stir in the orzo and cook for two minutes to toast lightly.
  2. Add shredded chicken, thyme, pepper, and Worcestershire if using. Stir to combine evenly.
Pour in Liquids
  1. Add chicken broth and cream and bring to a gentle simmer.
  2. Lower heat, cover, and cook for eight to ten minutes, stirring occasionally, until the orzo is tender.
Add Cheese
  1. Stir in most of the mozzarella and all the Parmesan until the mixture is creamy.
  2. Mix quickly so the cheese melts evenly.
Bake the Casserole
  1. Preheat the oven to 375°F (190°C).
  2. Sprinkle the remaining mozzarella on top and bake uncovered for ten to fifteen minutes until bubbly and golden.
Serve
  1. Let the casserole rest for five to ten minutes before serving.
  2. Garnish with fresh thyme or parsley if desired.

Notes

Cook onions until deep golden for real flavor. Light toasting improves texture and flavor. Warm liquid keeps the cooking time steady. Give the casserole time to set for easier serving.