French Onion Chicken Bake


  • 4 onions, peeled and sliced
  • 4 tablespoons butter
  • 4 cloves garlic, minced
  • 1/2 teaspoon pepper
  • 1 teaspoon thyme
  • 2/3 cup low sodium beef broth
  • 2 tablespoons balsamic vinegar
  • 4 chicken breasts, boneless skinless
  • Salt, to taste
  • Fresh parsley, chopped (for garnish, optional)


  1. Preheat the oven to 400°F (200°C).
  2. In a large oven-safe skillet or pan, melt the butter over medium heat. Add the sliced onions and sauté until they become soft and caramelized, about 10-15 minutes.
  3. Stir in the minced garlic, pepper, and thyme. Cook for an additional 1-2 minutes until fragrant.
  4. Pour in the beef broth and balsamic vinegar. Allow the mixture to simmer for a few minutes, allowing the flavors to combine.
  5. Push the onion mixture to the sides of the pan to create space in the center. Place the chicken breasts in the center of the pan.
  6. Season the chicken breasts with a pinch of salt and additional thyme if desired.
  7. Spoon some of the onion mixture over the chicken breasts.
  8. Transfer the skillet to the preheated oven and bake for about 20-25 minutes, or until the chicken is cooked through and no longer pink in the center.
  9. If desired, broil the chicken for an additional 1-2 minutes to get a slightly browned top.
  10. Remove from the oven and let the chicken rest for a few minutes before serving.
  11. Garnish with chopped fresh parsley if desired.