For deeper flavor, take your time caramelizing the onions.
Add a splash of broth when reheating leftovers to maintain creaminess.
You can assemble the casserole up to one day in advance and bake when ready to serve.
Ultimate French Onion Chicken Orzo Casserole Weeknight Dinner Magic
A rich and comforting baked casserole inspired by classic French onion flavors, featuring tender chicken, caramelized onions, creamy orzo, and melted cheese.
Ingredients
Scale
2 tablespoons olive oil
2 tablespoons unsalted butter
3 large yellow onions, thinly sliced
1 teaspoon granulated sugar
1 teaspoon salt, divided
½ teaspoon black pepper
3 cloves garlic, minced
1 teaspoon dried thyme
1 ½ pounds boneless, skinless chicken breasts, cut into bite-sized pieces
1 cup dry orzo pasta
2 ½ cups low-sodium chicken broth
½ cup heavy cream
1 tablespoon Worcestershire sauce
1 ½ cups shredded mozzarella cheese
1 cup shredded Swiss cheese
¼ cup grated Parmesan cheese
2 tablespoons chopped fresh parsley (optional)
Instructions
-
Preheat oven to 375°F (190°C).
-
In a large oven-safe skillet, heat olive oil and butter over medium heat. Add sliced onions, sugar, and ½ teaspoon salt. Cook 20–25 minutes until caramelized.
-
Stir in garlic and thyme; cook 1 minute.
-
Add chicken, remaining ½ teaspoon salt, and black pepper. Cook 5–6 minutes until lightly browned.
-
Stir in orzo, chicken broth, heavy cream, and Worcestershire sauce. Bring to a simmer.
-
Top with mozzarella, Swiss, and Parmesan cheese.
-
Bake uncovered for 20–25 minutes until orzo is tender and cheese is bubbly.
-
Rest 5–10 minutes before serving. Garnish with parsley if desired.