Preparation Steps

• Start by preheating your oven to 350°F. In a large skillet, heat olive oil over medium heat, then add your sliced onions. Cook them slowly, stirring frequently until they turn golden brown and caramelized, which should take about 15-20 minutes.
• Once the onions are ready, add the minced garlic and cook for another minute until fragrant. Then, transfer the onions to a large mixing bowl.
• In the same skillet, add the chicken breasts, seasoning them with salt, black pepper, and thyme. Brown the chicken on both sides for about 5 minutes total, then slice them into bite-sized pieces.
• Next, combine the chicken with the caramelized onions, heavy cream, and beef broth in the bowl. Gently mix in the cubed French bread, making sure everything is well coated.
• Pour the mixture into a greased baking dish and sprinkle the Gruyere cheese on top. Bake it in the oven for about 30-35 minutes, or until the cheese is bubbling and golden brown.
• Let the casserole cool for a few minutes before serving. Enjoy this comforting dish that pairs beautifully with a simple side salad!