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Golden brown French Onion Baked Chicken topped with melted Gruyère and caramelized onions in a skillet.

French Onion Smothered Baked Chicken

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Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Servings: 4 servings
Calories: 480
Ingredients Method

Ingredients
  

  • 4 (6 oz) boneless, skinless chicken breasts
  • 3 large yellow onions, thinly sliced
  • 3 tablespoons unsalted butter
  • 2 tablespoons olive oil
  • 1/2 cup beef broth
  • 1 tablespoon balsamic vinegar
  • 1 teaspoon dried thyme
  • 1 cup shredded Gruyère cheese
  • 1/2 cup shredded Provolone cheese
  • 1/2 teaspoon kosher salt
  • 1/2 teaspoon ground black pepper

Method
 

  1. Preheat the oven to 400°F (200°C).
  2. In a large skillet over medium heat, melt the butter and 1 tablespoon of olive oil. Add the sliced onions and cook, stirring occasionally, for 25 to 30 minutes until deep golden brown.
  3. Stir in the balsamic vinegar and beef broth. Simmer for 2 to 3 minutes until the liquid reduces by half, then remove from heat.
  4. Season the chicken breasts on both sides with salt, pepper, and dried thyme.
  5. In a separate oven-safe skillet or pan over medium-high heat, add the remaining tablespoon of olive oil. Sear the chicken for 3 minutes per side until golden.
  6. Spread the caramelized onions evenly over the top of each chicken breast.
  7. Sprinkle the shredded Gruyère and Provolone cheeses over the onions.
  8. Transfer the skillet to the oven and bake for 15 to 20 minutes, or until the chicken reaches an internal temperature of 165°F (74°C).
  9. Optional: Place under the broiler for 1 to 2 minutes until the cheese is browned and bubbly.