French Onion Chicken Casserole Recipe – Creamy Orzo Bake with Caramelized Onions
This French Onion Chicken Orzo Casserole is the ultimate comfort food—rich, creamy, and packed with savory flavor! Juicy chicken, tender orzo pasta, and sweet caramelized onions come together in a cheesy, one-pan bake that’s perfect for cozy weeknights or family dinners. Inspired by the classic French onion soup, this casserole delivers all the flavor with none of the fuss. Top with melty Gruyère or mozzarella and fresh herbs for a dish that’s as elegant as it is satisfying.
Equipment
- Large skillet
- Casserole dish (9x13-inch)
- Mixing spoon or spatula
- Measuring Cups and Spoons
- Oven
- Broiler (optional)
Ingredients
- 2–3 yellow or sweet onions, thinly sliced
- 2 tbsp butter or olive oil
- 2 garlic cloves, minced
- 1 tsp fresh thyme (or ½ tsp dried)
- 1 cup beef or chicken broth
- 1 cup uncooked orzo pasta
- 2 cups cooked chicken (shredded or cubed)
- ½ cup heavy cream (or sour cream/cream cheese)
- 1½ cups shredded Gruyère, Swiss, or mozzarella cheese
- 1 cup crispy fried onions (optional topping)
- Salt and pepper to taste
- Fresh parsley or thyme for garnish
Instructions
- Caramelize Onions In a large skillet, melt butter or oil over medium-low heat. Add sliced onions and cook slowly, stirring often, until deeply golden—about 20–25 minutes.
- Add Garlic and Herbs Stir in garlic and thyme. Cook for 1–2 minutes. Deglaze with broth, scraping up browned bits.
- Combine Base Stir in uncooked orzo, cooked chicken, and cream. Season with salt and pepper.
- Transfer and Top Pour mixture into a greased 9x13-inch casserole dish. Sprinkle cheese evenly on top.
- Bake Bake uncovered at 375°F for 25–30 minutes until bubbly and orzo is tender.
- Optional Broil Top with crispy onions and broil for 2–3 minutes until golden.
- Rest and Serve Let casserole rest for 5–10 minutes before serving. Garnish with fresh herbs.
Notes
- Use rotisserie chicken for convenience.
- Beef broth adds deeper flavor than chicken broth.
- Stir orzo halfway through baking to prevent sticking.
- Add a splash of white wine while caramelizing onions for extra depth.
- Freeze leftovers in airtight containers for up to 2 months.
- Reheat with a splash of broth or cream to restore moisture.