Put the words “French Onion” in front of just about any recipe, and I’m pretty much guaranteed to like it. This French Onion Chicken? True amore. Hunks of crusty sourdough bread, sweet onions, and juicy chicken tossed in melted butter then baked until caramelized and tender, this tasty recipe transforms the flavors and ingredients of French onion soup into an easy weeknight one pan dinner.

Easy French Onion Chicken. A healthy, one pan sheet pan chicken dinner with crispy, buttery bread, caramelized onions, and juicy chicken breasts or thighs, all baked on a single pan. Tastes like French onion soup, but so much less work!

Whole roast chicken isn’t something I make often, but when I saw a recipe for a French-onion-inspired roast chicken in a recent issue of Cooking Light, I couldn’t put it out of my head. I cooked other things in the meantime, but it kept coming back to me.

The true reason I avoided the recipe was that it seemed overly fussy. It called for caramelizing the onions and fixing a sauce on one pan, scraping it onto a second pan to bake, and butterflying a chicken, which, no matter how many times I watch Ina do it on TV, is not something that I relish the idea of tackling. Worst of all, it did not include the best part of any French onion anything: the crusty bread.

Still, the idea stuck. Surely I could come up with an easy French onion chicken, I assured myself, one that would be equally scrumptious but require less effort.

This recipe is it!

Easy French Onion Chicken. A one-pan meal with roasted chicken, caramelized onions, and crispy bread!

French Onion Chicken—Easy Prep, Gourmet Taste

My Big Idea was to see if I could convince the onions to caramelize on a sheet pan in the oven, then use that same pan to bake the chicken so that I’d only dirty one dish. It worked even better than I imagined!

In the oven, the onion breaks down, sweetens, and turns into a glorious caramelized sauce ideal for spooning right over the chicken and bread. The trick is to crowd the pan. Normally crowding a pan of roasted veggies is their demise, but in the case of this French onion chicken bake, it works in our favor by ensuring the onions’ sweet juices don’t escape.

The hunks of bread were an easy and (I dare say) necessary addition.

The roughly cut bread pieces transform into big, golden, lightly crispy “croutons,” just like the floating pieces of French bread in my Instant Pot French Onion Soup do.

Even better, as the chicken bakes, the bread absorbs some of its juices, giving the golden cubes even more flavor. 

Healthy French Onion Chicken. A one-pan dinner that tastes like French onion chicken soup!

While we *could* stop at the chicken, onions, and bread and have a delicious recipe, a few final touches make this French Onion chicken even more memorable: bit of Dijon mustard (so French!), whole cloves of roasted garlic, and a sprinkle of fresh thyme.

What to Serve with French Onion Chicken

Other One Pan Chicken Dinners


Easy French Onion Chicken. A healthy, one pan sheet pan chicken dinner with crispy, buttery bread, caramelized onions, and juicy chicken breasts or thighs, all baked on a single pan. Tastes like French onion soup, but so much less work!
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4.8 from 5 votes

French Onion Chicken

Easy French Onion Chicken. A healthy chicken dinner with crispy bread, caramelized onions, and juicy chicken breasts or thighs, baked on a single sheet pan!
Prep Time: 25 mins
Cook Time: 35 mins
Total Time: 1 hr
Servings: 4 people


  • 1 very large 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 1/2 teaspoons kosher salt - divided
  • 2 1/4 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
  • 1/2 teaspoon black pepper
  • 1 1/2 tablespoons chopped fresh thyme


  • 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.
  • Place the onions, bread cubes, and garlic cloves in a large bowl. In a small heatproof bowl or liquid measuring cup, melt the butter. Whisk the olive oil, mustard, and 1/2 teaspoon kosher salt in with the butter, then pour over the onion-bread mixture. Toss to coat as evenly as possible. Turn the mixture out onto the prepared baking sheet. Spread into an even layer.
  • 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 salt and pepper.
  • 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.
  • If you'd like the bread to be even more crisp, 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. Return the chicken to the pan and sprinkle the whole shebang 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.


Serving: 1serving, Calories: 703kcal, Carbohydrates: 35g, Protein: 53g, Fat: 40g, Saturated Fat: 13g, Cholesterol: 105mg, Fiber: 5g, Sugar: 2g
Course: Dinner
Cuisine: American, French
All text and images ©Erin Clarke / Well Plated
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