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Creamy, cheesy, and packed with shredded chicken, this French onion chicken casserole is comfort food at its best! Inspired by French onion soup and dip, it’s topped with crispy fried onions for a crunchy finish.

Overhead shot of baked French onion chicken casserole in a baking dish.

Why This is a Comfort Food Upgrade

  • Cheesy Comfort, Made Easy: Creamy shredded chicken and melty cheese come together in one simple, cozy casserole.
  • Hassle-Free Dinner: Uses just 7 simple ingredients and comes together in less than 10 minutes, perfect for busy nights.
  • One-Dish Wonder: Little cleanup, big comfort! Everything gets mixed together in one bowl, then baked in one pan.

French Onion Chicken Casserole Ingredients

Overhead shot of labeled ingredients.
  • French Onion Dip: You can use pre-mixed French onion dip. If you do, omit the sour cream and onion soup mix.
  • Condensed Soup & Mix: Use low-sodium or no-salt versions, or make your own onion soup mix to control salt.
  • Homemade Soup: Swap canned cream of chicken for a homemade version to cut sodium.
  • Chicken: Rotisserie chicken works great (Costco’s is perfect), or cook frozen breasts in the Instant Pot.
  • Add Veggies: Stir in 1–2 cups of veggies like green beans, peas, broccoli, or sautéed mushrooms for extra flavor and nutrition.

French Onion Chicken Casserole Recipe

This dish comes together in just three easy steps! Quick prep, minimal cleanup, and major flavor make it an epic weeknight or make ahead meal.

  1. Mix Ingredients: Preheat the oven to 350ºF, then spray a 9 x 13-inch baking dish with nonstick cooking spray and set aside. Add the shredded chicken, sour cream, cream of chicken soup, French onion soup, Swiss cheese, and onion soup mix to a large bowl. Mix to combine.
  2. Bake: Spread the chicken mixture evenly in the baking dish. Bake uncovered for 25-30 minutes, until heated through and bubbling around the edges.
  3. Top, Bake, and Serve: Add the French-fried onions evenly to the top, then bake for 5-10 more minutes. Let it stand for 5-10 minutes before serving.
Casserole ingredients all added to a mixing bowl.
Ingredients all mixed together and added to a baking dish.
Picture of french onion chicken casserole in the oven with crispy onions added to the top.

Alyssa’s Pro Tip

Crispy Onions: To prevent burning, add the fried onions during the last 5–10 minutes of baking. If making ahead or freezing, keep the onions off until ready to bake.

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Plated French onion chicken casserole with a side of green beans.

More Easy Casserole Recipes

Love this dish? Try these next! They’re easy and packed with flavor. They’re perfect for busy nights when you want something everyone will enjoy.

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