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French Onion Baked Chicken

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This French Onion Baked Chicken is a cozy, one-skillet comfort dish inspired by French onion soup, made with caramelized onions, juicy chicken breasts, and topped with melted provolone and Swiss cheese. It’s a perfect weeknight dinner or elegant meal for guests.

Ingredients

  • 2 tablespoons olive oil
  • 4 tablespoons salted butter
  • 2 large yellow or white onions, thinly sliced
  • 1 teaspoon granulated sugar
  • ½ teaspoon coarse sea salt
  • 2–3 sprigs fresh thyme, leaves only
  • 1 bay leaf
  • 1–2 cloves garlic, minced
  • 4 boneless skinless chicken breasts (about 6 oz each)
  • ½ teaspoon black pepper
  • 1 tablespoon all-purpose flour
  • ½ cup dry white wine (or extra broth)
  • 1 cup beef stock
  • 1 cup grated provolone cheese
  • 1 cup grated Swiss cheese
  • Extra fresh thyme, for garnish

Instructions

  1. Caramelize the onions: In a large oven-safe skillet, heat olive oil and butter over medium heat. Add sliced onions and cook for 10 minutes. Stir in sugar, salt, thyme, and bay leaf. Continue cooking 15–20 more minutes, stirring often. Add garlic in the last 2 minutes. Deglaze with wine or broth if needed.
  2. Sear the chicken: While onions cook, season chicken with black pepper. Sear in the same skillet (after removing onions) for 3–4 minutes per side. Remove chicken and set aside.
  3. Make the sauce: Preheat oven to 350°F (175°C). Return onions to skillet, sprinkle with flour, and cook 1–2 minutes. Stir in wine and beef stock, simmering until thickened.
  4. Bake: Nestle chicken breasts into the onion mixture. Top each piece with provolone and Swiss cheese. Bake for 20–25 minutes, until cheese is melted and bubbly and internal temp hits 165°F.
  5. Garnish and serve: Rest a few minutes out of the oven, garnish with extra thyme, and serve.

Notes

  • Use boneless thighs for extra juicy results.
  • Swap in Gruyère or fontina for more traditional or melty flavors.
  • Great with mashed potatoes, crusty bread, or roasted veggies.
  • Use gluten-free flour or cornstarch slurry to make this gluten-free.
  • Prepare onions/sauce ahead to save time during busy nights.

Nutrition

Find it online: https://recipesbyliza.com/french-onion-baked-chicken/