French Onion Chicken

Craving something comforting and full of flavor?
This French Onion Chicken is exactly what you need!

It combines all the rich, savory goodness of French onion soup into a one-skillet meal.
Golden, pan-seared chicken is smothered in a caramelized onion sauce and topped with gooey, melted cheese.

It’s an easy and impressive dish, perfect for cozy dinners or when you want to treat yourself to something truly satisfying.
Get ready to fall in love with this easy-to-make, flavorful recipe!

For French Onion Chicken

Chicken – Boneless, skinless chicken breasts work best for this dish.

Salt and Pepper – Basic seasonings to bring out the flavors of the chicken.

Italian Seasoning – Adds a bit of herby flavor to the chicken.

Garlic Powder – For a subtle garlic flavor.

Flour – Used to dredge the chicken, giving it a crispy coating when seared.

Parmesan Cheese – Mixed with the flour to add flavor and help the crust stick.

Olive Oil – Used for searing the chicken.

Butter – Adds richness and flavor to the searing process.

For French Onion Sauce

Butter – Used to cook the onions and build a rich sauce base.

Olive Oil – Adds moisture to the skillet when cooking the onions.

Yellow Onions – The star of the dish, caramelized to perfection.

Soy Sauce – Adds umami to the sauce, making it more savory.

Rosemary, Thyme, and Sage – Fresh herbs that complement the onions and enhance the sauce.

Garlic – Minced garlic provides additional depth to the sauce.

Chicken Broth – Adds acidity and helps deglaze the pan.

Flour – Thickens the sauce and helps it coat the chicken.

Beef Broth and Chicken Broth – The base for the sauce, providing a savory depth.

Beef Bouillon – Enhances the flavor of the broth.

Mozzarella Cheese – Melts over the chicken for a delicious, gooey finish.

French Onion Chicken

This cozy skillet-baked French Onion Chicken is full of rich, savory flavor. Juicy chicken is coated in a golden crust, simmered in a caramelized onion sauce, and topped with bubbly, melted cheese.

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Course: Main Course

Cuisine: American

Keyword: French Onion Chicken

Prep Time: 10

Cook Time: 1 30

Total Time: 1 40

Servings:

Notes

Ingredients

Chicken:

2 large boneless, skinless chicken breasts
Salt and pepper (to taste)
1 tbsp Italian seasoning
½ tbsp garlic powder
½ cup flour
¼ cup shredded Parmesan cheese
3 tbsp olive oil
1 tbsp butter (salted or unsalted)

Onion Sauce:

2 tbsp unsalted butter
1 tbsp olive oil
3 yellow onions (about 1.5 lbs), sliced ¼ inch thick
1 tbsp low sodium soy sauce
1 tsp dried rosemary
1 tsp dried thyme
¼ tsp ground sage
3 garlic cloves, minced
½ cup chicken broth
2 tbsp flour
1 cup beef broth
1 cup chicken broth
1 beef bouillon cube
2 cups shredded cheese (mozzarella, provolone, or gruyere)

Instructions

1. Prep the Chicken

Slice each chicken breast into 2–3 thinner cutlets.
Pound them to ¼-inch thickness between plastic wrap.
Pat dry and season both sides with salt, pepper, garlic powder, and Italian seasoning.
Mix flour and Parmesan in a shallow bowl and dredge the chicken.

2. Sear the Chicken

Heat 3 tbsp olive oil and 1 tbsp butter in a large skillet over medium-high heat.
Sear the chicken 3 minutes per side, or until golden brown.
Set aside and cover with foil. (It’ll finish cooking in the oven.)

3. Caramelize the Onions

In the same skillet, melt 2 tbsp butter and 1 tbsp olive oil.
Scrape up any browned bits from the bottom for extra flavor.
Add sliced onions and stir to coat. Cook for 5 minutes.
Add soy sauce, rosemary, thyme, and sage.
Cover and cook on low heat for 30 minutes, stirring occasionally.
Remove the lid, increase heat to medium, and cook 10 more minutes, stirring often.

4. Make the Sauce

Preheat oven to 475°F (245°C).
Add garlic and ½ cup chicken broth to the skillet.
Simmer uncovered for about 10 minutes to reduce slightly.
Stir in 2 tbsp flour and cook for 1–2 minutes.
Add beef broth, the remaining 1 cup chicken broth, and bouillon.
Bring to a gentle boil and simmer 3–5 minutes until thickened.
Remove from heat.

5. Bake

Return chicken to the skillet and spoon onions over the top.
Sprinkle with cheese.
Bake for 15–20 minutes, until the cheese is melted, golden, and bubbly.
Garnish with fresh thyme and serve!

Tips & Notes

The soy sauce adds umami but isn’t noticeable in taste.
Use low sodium broth and butter to control saltiness.
Gruyere, mozzarella, Swiss, or provolone all work great.
Optional: Add Gravy Master for a deeper sauce color.
For even more flavor, try this with my French Onion Pasta next!

Nutrition

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1. Can I use pre-sliced onions to save time?
Yes, using pre-sliced onions can significantly cut down your preparation time. However, slicing your own onions allows you to control the thickness and freshness, which can enhance the flavor and texture of the dish.

2. What if I don’t have Gruyère cheese?
Gruyère adds a distinct, nutty flavor, but if it’s unavailable, you can substitute it with Swiss, mozzarella, or provolone cheese. Each will offer a slightly different taste and meltability, so choose according to your preference.

3. Is it necessary to sear the chicken before baking?
Searing the chicken creates a flavorful crust and enhances the overall taste of the dish. If you’re short on time, you can skip this step, but the depth of flavor may be reduced.

4. Can I prepare the caramelized onions in advance?
Absolutely. Caramelized onions can be made ahead and stored in the refrigerator for up to three days. This not only saves time on the day of cooking but also allows the flavors to develop further.

5. How can I make this recipe gluten-free?
To make the dish gluten-free, substitute the all-purpose flour with a gluten-free flour blend or cornstarch for dredging the chicken. Ensure that all other ingredients, such as broths and cheeses, are certified gluten-free.