Creating the Cozy French Onion Chicken Rice Bake is straightforward and enjoyable. Just follow these simple steps:

1. Preheat the Oven: Set your oven to 375°F (190°C).
2. Sauté Onions: In a large skillet, heat olive oil over medium heat. Add the sliced onions, seasoning with salt and pepper. Cook for about 10-15 minutes or until they are golden and caramelized.
3. Prepare Rice: In a 9×13-inch baking dish, spread the rice evenly on the bottom. Pour the chicken broth over the rice, ensuring it’s fully covered.
4. Layer Chicken: Place the chicken thighs on top of the rice and broth mixture. Season them with salt and pepper for additional flavor.
5. Add Onions: Spread the sautéed onions evenly over the chicken, distributing them well.
6. Top with Cheese: Sprinkle the shredded Gruyère cheese generously over the whole dish, making sure to cover everything.
7. Cover and Bake: Cover the baking dish tightly with foil. Bake for 45 minutes.
8. Uncover and Finish Baking: After 45 minutes, remove the foil and bake for an additional 15-20 minutes until the cheese is bubbly and golden.
9. Let It Rest: Once baked, take it out of the oven and allow it to sit for about 10 minutes. This will help the flavors settle and the rice absorb the broth.
10. Serve: Use a spatula to serve portions directly from the baking dish. Enjoy the comforting flavors combined in this incredible bake!