French Onion Chicken Noodle Casserole

This creamy, savory French Onion Chicken Noodle Casserole is made with caramelized onions, tender chicken, and egg noodles, ready in 60 minutes. The gooey layer of melted Gruyere cheese stretches perfectly as you scoop out the first portion. I love making this when the weather turns cold and we need something hearty.

Why This Classic Works

I used to think combining French onion soup and chicken casserole would be too salty. I learned that using a touch of unsalted beef broth and fresh caramelized onions keeps the flavor deep but balanced.

The sweetness of the slow-cooked onions perfectly complements the savory shredded chicken. Baking it all together forces the egg noodles to soak up those rich, comforting flavors.

Jump to Recipe

French Onion Chicken Noodle Casserole Ingredients

• 2 tbsp unsalted butter
• 2 large yellow onions, thinly sliced
• 2 cups cooked chicken, shredded
• 1 (10.5 oz) can condensed French onion soup
• 1/2 cup sour cream
• 1/2 cup beef broth
• 8 oz wide egg noodles, cooked
• 1 1/2 cups Gruyere cheese, shredded
• 1 tsp fresh thyme, chopped

How To Make French Onion Chicken Noodle Casserole

1. Caramelize Onions: Melt butter in a large skillet over medium-low heat. Add sliced onions and cook for 20 to 25 minutes until deeply browned and soft.
2. Mix Base: In a large bowl, combine the condensed French onion soup, sour cream, beef broth, shredded chicken, and fresh thyme. Stir until smooth.
3. Combine Noodles: Fold the cooked egg noodles and caramelized onions into the chicken mixture until evenly coated.
4. Assemble Casserole: Pour the noodle mixture into a greased 9×13 inch baking dish. Top evenly with shredded Gruyere cheese.
5. Bake: Bake at 375°F for 15 to 20 minutes until the cheese is melted, bubbly, and slightly golden on top. Let rest for 5 minutes before serving.

Recipe Tips

• Be patient with onions: Rushing the caramelization process will result in burnt onions instead of sweet, soft ones.
• Cook noodles al dente: The egg noodles will continue to absorb liquid in the oven, so slightly undercook them initially.
• Freshly grate the cheese: Pre-shredded cheese contains anti-caking agents that prevent it from melting into a smooth layer.

What To Serve With French Onion Chicken Noodle Casserole

Serve this heavy dish with a crisp green salad tossed in a sharp vinaigrette to cut through the richness. Roasted green beans or steamed broccoli also make excellent sides.

How To Store

Keep leftovers in an airtight container in the fridge for up to 3 days. You can also freeze unbaked portions wrapped tightly in foil for up to two months.

FAQs

Can I use store-bought rotisserie chicken?

Yes, pulling meat from a rotisserie chicken saves time and adds great flavor to the dish.

What can I substitute for Gruyere?

Swiss cheese or provolone work well if you cannot find Gruyere or want a more budget-friendly option.

Can I make this ahead of time?

You can assemble the casserole a day in advance, store it covered in the fridge, and bake it when ready.

Nutrition

• Calories: 420 kcal
• Total Fat: 18 g
• Saturated Fat: 9 g
• Cholesterol: 85 mg
• Sodium: 680 mg
• Total Carbohydrate: 32 g
• Protein: 28 g

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