One-Pan French Onion Smothered Chicken

A close-up view of a French onion-smothered chicken on a bed of mashed potatoes with steamed green beans in the background, all on a white dinner plate.

One-Pan French Onion Smothered Chicken

Course: Entree

Cuisine: American, French / American

Prep Time: 15

Cook Time: 50

Total Time: 1 5

Servings:

Calories: 614kcal

Author: Kris Longwell

This One-Pan French Onion Smothered Chicken features juicy, golden-seared breasts topped with deeply caramelized onions and a bubbly, double-cheese blanket. It’s a restaurant-quality, bistro-style dinner that’s surprisingly easy to make in a single skillet.

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Equipment

1 large ovenproof skillet see NOTES

Ingredients

2 large chicken breasts boneless, skinless, sliced in half to create 4 thin cutlets
salt and pepper
½ teaspoon garlic powder
½ cup all-purpose flour
2 tablespoon olive oil divided
4 tablespoon unsalted butter divided
3 large yellow onions thinly sliced and cut into half moons
2 cloves garlic minced
1 teaspoon thyme dried
1 tablespoon balsamic vinegar
1 tablespoon Dijon mustard
1 cup beef stock or broth
1 cup Gruyere cheese grated
4 slices Provolone cheese
2 tablespoon Italian parsley fresh, chopped

Instructions

Slice the cutlets in half, lengthwise. Season the cutlets all over with salt and pepper. Add the flour to a large platter and mix in ½ teaspoon salt, ½ teaspoon black pepper, and ½ teaspoon garlic powder. Dredge the cutlets through the seasoned flour until fully coated.
2 large chicken breasts, salt and pepper, ½ teaspoon garlic powder, ½ cup all-purpose flour
Heat 1 tablespoon of oil and 1 tablespoon of butter over medium heat in a large oven-safe skillet. Sear the floured chicken cutlets until golden on the underside, about 4 to 5 minutes. Gently move the cutlets around in the skillet to prevent sticking and even browning. Flip the cutlets and brown the other sides, about another 4 to 5 minutes. Remove the cutlets from the skillet onto a clean platter or plate.
2 tablespoon olive oil, 4 tablespoon unsalted butter
Melt the remaining 3 tablespoon butter in the same skillet over medium heat. Add the onions (it will fill the pan), and a pinch of salt. Cook, stirring often, until they become very soft, reduced, jammy, and a mahogany color, about 30 to 40 minutes.
3 large yellow onions
Add a pinch of salt, garlic, and thyme to the onions. Stir and cook for 1 minute. Stir in the balsamic, Dijon, and beef stock. Bring to a simmer, stirring occasionally for a minute or two, until slightly thickened.
2 cloves garlic, 1 teaspoon thyme, 1 tablespoon balsamic vinegar, 1 tablespoon Dijon mustard, 1 cup beef stock
Nestle the chicken cutlets into the sauce and top each one with a small handful (about a ¼ cup) of the grated Gruyere. Top with a slice of Provolone
1 cup Gruyere cheese, 4 slices Provolone cheese
Place a grate in your oven about 6 inches from the heating element. Turn the broiler onto HIGH. Place the skillet in the oven and broil for about 1 to 2 minutes, or until the cheese is melted and beginning to brown in a few spots. Keep an eye on it, don't let it burn!
Serve at once, garnish with chopped parsley.
2 tablespoon Italian parsley

Video

Notes

NOTE: Watch the video in the recipe card for visual guidance.

Scaling Up for a Crowd: If you are cooking more than four cutlets, be sure to sear the chicken in batches to avoid crowding the pan; this ensures every piece gets that essential golden-brown crust. Once all the chicken is seared and your onion gravy is ready, you can transfer the chicken to a 9x13 baking dish, spoon the onions and sauce over the top, add your cheese, and bake at 375°F for 10–15 minutes until the cheese is perfectly melted and bubbly.
Don't Rush the Onions: The deep, savory flavor of this dish comes entirely from the caramelization process. If the onions start to look dry or brown too quickly, add a tablespoon of water to the skillet to scrape up the flavorful bits and keep them softening evenly.
Internal Temperature: For the juiciest results, use a meat thermometer to ensure the chicken reaches an internal temperature of 165°F. Since the cutlets are thin, they cook quickly, so keep a close eye on them during the final broiling step.
Make-Ahead Tip: You can prepare the caramelized onion gravy up to 5 days in advance. Simply reheat it in the skillet with a splash of beef broth before nestling the seared chicken back into the pan to finish.

Nutrition