Can I use chicken breasts instead of thighs?

Thighs are ideal for this dish because they stay moist during braising. Breasts will dry out; if using them, reduce cooking time by 10 minutes and check for doneness earlier.

How long does it take to caramelize the onions?

Deep caramelization takes 25–35 minutes over medium heat, stirring occasionally. Don't rush—this is where the dish's flavor comes from.

What's the difference between mozzarella and Gruyère for the topping?

Gruyère has a nuttier, more complex flavor that mirrors traditional French onion soup; mozzarella is milder and melts smoothly. Both work; choose by taste preference.

Can I make this ahead?

Yes. Braise the chicken and onions up to 2 days ahead, refrigerate, then reheat gently on the stovetop and broil the cheese just before serving.

What wine can I substitute for dry white wine?

Use dry vermouth, additional beef broth, or omit it entirely—the onions and broth will still build deep flavor, though the wine adds complexity.

French Onion Chicken with Melted Cheese

Name: French Onion Chicken with Melted Cheese
Prep time: 10 min
Cook time: 55 min
Total time: 1 h 5 min
Yield: 4 servings
Cuisine: French
Ingredients: 3 onions, thinly sliced; 2 tbsp olive oil, divided; 1 tbsp butter; salt, to taste; black pepper, to taste; 8 bone-in, skin-on chicken thighs (about 3 lbs); 1 tsp garlic powder; 1 tsp paprika; 2 tbsp all-purpose flour; 1/2 cup dry white wine; 2 cups beef broth; 1 tbsp garlic and pepper paste; 1 tsp fresh thyme, chopped; 8 oz fresh mozzarella or Gruyère cheese, sliced; 1 tbsp fresh parsley, chopped, for garnish; Garlic mashed potatoes, for serving; Cooked asparagus, for serving

CookOSBeta

French Onion Chicken with Melted Cheese | CookOS

Ingredients

3 onions, thinly sliced
2 tbsp olive oil, divided
1 tbsp butter
salt, to taste
black pepper, to taste
8 bone-in, skin-on chicken thighs (about 3 lbs)
1 tsp garlic powder
1 tsp paprika
2 tbsp all-purpose flour
1/2 cup dry white wine
2 cups beef broth
1 tbsp garlic and pepper pasteoptional
1 tsp fresh thyme, chopped
8 oz fresh mozzarella or Gruyère cheese, sliced
1 tbsp fresh parsley, chopped, for garnishoptional
Garlic mashed potatoes, for servingoptional
Cooked asparagus, for servingoptional

17 Ingredients

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Instructions

1
Thinly slice the onions.
2
In a large cast iron skillet over medium heat, add 1 tablespoon of olive oil and the butter.
3
Add the sliced onions to the skillet and season with salt and pepper.
4
Cook the onions, stirring occasionally, for 25-30 minutes until deeply caramelized and golden brown.
5
While the onions are cooking, season the chicken thighs on all sides with salt, pepper, garlic powder, and paprika.
6
Once caramelized, remove the onions from the skillet and set aside.
7
Add the remaining tablespoon of olive oil to the same skillet. Place the chicken thighs skin-side down and sear for 5 minutes per side until golden and crispy.
8
Remove the seared chicken from the skillet and set aside.
9
Sprinkle the flour into the pan drippings and stir to form a roux. Cook for 1 minute, scraping up any browned bits from the bottom of the pan.
10
Deglaze the pan by pouring in the white wine, stirring constantly to combine.
11
Gradually whisk in the beef broth, followed by the garlic and pepper paste (if using) and chopped thyme.
12
Bring the sauce to a simmer and cook for about 4 minutes, until it has thickened slightly.
13
Return the chicken thighs to the skillet with the sauce.
14
Top each piece of chicken with a portion of the caramelized onions.
15
Cover the skillet, reduce heat to low, and simmer for 10 minutes to allow the chicken to cook through.
16
Uncover and top each chicken thigh with a slice of mozzarella or Gruyère cheese.
17
Place the skillet under the broiler for 2-3 minutes, or until the cheese is melted, bubbly, and golden brown.
18
Garnish with fresh parsley and serve immediately over garlic mashed potatoes with a side of asparagus.