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French Onion Chicken

The BEST French onion chicken. This healthy French onion chicken recipe is full of flavor and made on a single sheet pan. Easy!

Prep Time
25 mins
Cook Time
25 mins
Total Time
1 hr
Servings: 4 people
Calories: 583 kcal
Course: Dinner
Cuisine: French , American

Ingredients

  • 1 jumbo yellow onion thinly sliced (about 12 ounces or 3 1/2 cups)
  • 8 ounces good-quality sourdough bread whole grain if possible, cut into 1 1/2-inch cubes (about 3 1/2 heaped cups)
  • 8 cloves garlic peeled and left whole
  • 2 tablespoons unsalted butter
  • 2 tablespoons extra-virgin olive oil
  • 1 tablespoon Dijon mustard
  • 2 teaspoons kosher salt divided
  • 2 ¼ pounds bone-in, skin-on chicken breasts cut in half crosswise through the bone (side to side, so you have two more “square” vs. long pieces)—about 3 breasts
  • ½ teaspoon ground black pepper
  • 1 ½ tablespoons chopped fresh thyme

Instructions

    Cup of Yum
  1. Place a rack in the center of the oven and preheat the oven to 400 degrees F. For easy cleanup, line a large, rimmed baking sheet with aluminum foil, parchment paper, or a silicone baking mat.
  2. Place the onions, bread cubes, and garlic cloves in a large bowl.
  3. In a small heatproof bowl or liquid measuring cup, melt the butter. Whisk the olive oil, mustard, and 1 teaspoon kosher salt with the butter.
  4. Pour the mixture over the onions and bread. Toss to coat as evenly as possible. Turn the mixture out onto the prepared baking sheet. Spread into an even layer.
  5. Nestle the chicken pieces into the onion mixture. It can overlap the onions a little, but make sure it does not cover the bread. Sprinkle the chicken with the remaining 1 teaspoon of salt and pepper.
  6. Bake for 15 minutes, then remove the pan from the oven and carefully turn the bread cubes. Return to the oven and bake until the bread is deeply golden and the chicken registers 160 degrees F on an instant-read thermometer inserted at the thickest part, about 15 additional minutes for smaller pieces and 20 to 25 minutes for larger pieces. (If some chicken pieces cook more quickly than others, remove the cooked pieces to a plate and cover to keep them warm, then return the pan to the oven and continue baking until all of the chicken is cooked through.)
  7. Sprinkle everything with fresh thyme. Transfer the chicken to plates. Serve hot with the croutons and a spoonful of the roasted onions and garlic over the top.

Notes

  • If you'd like the bread to be extra crispy, you can transfer all the chicken pieces to a plate (cover the plate with foil to keep the chicken warm), then turn the bread once more and return the pan to the oven for 5 to 7 additional minutes, or until the bread reaches your desired crispness. Remove from oven, then serve as directed with a sprinkle of thyme.
  • TIP: If you'd like the bread to be extra crispy, you can transfer all the chicken pieces to a plate (cover the plate with foil to keep the chicken warm), then turn the bread once more and return the pan to the oven for 5 to 7 additional minutes, or until the bread reaches your desired crispness. Remove from oven, then serve as directed with a sprinkle of thyme.
  • TO STORE: Leftovers may be stored in the fridge for up to 3 days in an airtight container.
  • TO REHEAT: For best results, warm leftovers on a sheet pan in a 350-degree F oven until the chicken is heated through and the croutons have crisped. Leftover French onion chicken may also be microwaved. However, the chicken skin and croutons will not be as crisp.
  • TO FREEZE: Leftovers may be frozen for up to 3 months. Let defrost overnight in the refrigerator, then reheat as directed above.

Nutrition Information

Serving 1serving Calories 583kcal (29%) Carbohydrates 35g (12%) Protein 61g (122%) Fat 21g (32%) Saturated Fat 6g (30%) Polyunsaturated Fat 3g Monounsaturated Fat 9g Trans Fat 0.3g Cholesterol 178mg (59%) Potassium 1102mg (31%) Fiber 2g (8%) Sugar 4g (8%) Vitamin A 381IU (8%) Vitamin C 11mg (12%) Calcium 76mg (8%) Iron 4mg (22%)

Nutrition Facts

Serving: 4people

Amount Per Serving

Calories 583

% Daily Value*

Serving 1serving
Calories 583kcal 29%
Carbohydrates 35g 12%
Protein 61g 122%
Fat 21g 32%
Saturated Fat 6g 30%
Polyunsaturated Fat 3g 18%
Monounsaturated Fat 9g 45%
Trans Fat 0.3g 15%
Cholesterol 178mg 59%
Potassium 1102mg 23%
Fiber 2g 8%
Sugar 4g 8%
Vitamin A 381IU 8%
Vitamin C 11mg 12%
Calcium 76mg 8%
Iron 4mg 22%

* Percent Daily Values are based on a 2,000 calorie diet.