Description
This Easy French Onion Chicken Orzo Casserole is a comforting and flavorful one-dish meal featuring caramelized onions, tender shredded chicken, nutty orzo pasta, and melted Gruyère cheese. Slow-cooked in the oven to achieve a golden bubbly top, this casserole combines the rich taste of French onion soup with hearty ingredients perfect for a cozy family dinner or meal prep.
Ingredients
Scale
For the Casserole
- 2 tablespoons olive oil
- 2 large yellow onions, thinly sliced
- 2 cups cooked chicken breast, shredded
- 1 1/2 cups orzo pasta, uncooked
- 3 cups low-sodium chicken broth
- 1 cup shredded Gruyère cheese
- 1 tablespoon fresh thyme leaves (or 1 teaspoon dried thyme)
- 1/2 teaspoon salt
- 1/2 teaspoon black pepper
Instructions
- Preheat Oven: Preheat your oven to 375°F (190°C) to prepare for baking the casserole later.
- Caramelize Onions: Heat olive oil in a large skillet over medium heat. Add the thinly sliced onions and cook, stirring frequently, until they are fully caramelized and golden brown, about 15-20 minutes. This slow cooking brings out their natural sweetness.
- Combine Ingredients: Stir in the shredded chicken, uncooked orzo pasta, fresh thyme, salt, and black pepper into the caramelized onions. Cook for 2-3 minutes to integrate the flavors and slightly toast the orzo.
- Add Broth and Simmer: Pour in the chicken broth and bring the mixture to a simmer. Stir thoroughly to combine all ingredients. This step partially cooks the orzo and allows the flavors to meld.
- Transfer to Casserole Dish: Grease a 9×13-inch casserole dish and pour the skillet mixture into it, spreading evenly.
- Add Cheese and Cover: Sprinkle the shredded Gruyère cheese evenly over the top of the casserole. Cover the dish tightly with aluminum foil to trap moisture while baking.
- Bake Covered and Uncovered: Bake the casserole covered for 30 minutes to cook the orzo fully and blend flavors. Then remove the foil and bake for an additional 10 minutes to allow the cheese to melt and turn bubbly golden brown.
- Rest and Serve: Remove from oven and let the casserole cool slightly before serving to allow it to set for easier portioning and enhanced flavors.
Notes
- For a vegetarian version, replace chicken with sautéed mushrooms or plant-based protein and use vegetable broth instead of chicken broth.
- Gruyère can be substituted with Swiss or mozzarella cheese if unavailable.
- Ensure onions are cooked low and slow for best caramelization without burning.
- Leftovers can be stored in the refrigerator for up to 3 days and reheated in the oven or microwave.
- If using dried thyme, crush it between your fingers before adding to release more flavor.
