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Dinner

Creamy Chicken Spaghetti Casserole

A cozy, bubbling pasta bake loaded with tender chicken and a rich cheese sauce.

By Recipes By Nani· 🌍 American· September 1, 2026
Creamy Chicken Spaghetti Casserole
recipesbynani.com
Prep
10 minutes
Cook
25 minutes
Total
35 minutes
Serves
6

There is nothing quite like a warm casserole after a long day. This creamy chicken spaghetti is a favorite in my house because it is pure comfort in a dish, and it always disappears from the table within minutes. The combination of tender chicken and a savory cheese sauce makes it a reliable go to for busy weeknights.

Using a rotisserie chicken is my favorite shortcut for this recipe. It saves so much time in the kitchen without sacrificing any flavor. If you have any leftovers, just pop them in the fridge, as this meal tastes even better the next day.

🧺 Ingredients

  • 8 ounces spaghetti
  • 2 cups cooked chicken, shredded
  • 2 cups shredded cheddar cheese
  • 1/2 cup grated Parmesan cheese
  • 1 cup sour cream
  • 1/2 cup mayonnaise
  • 1 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • 1/2 cup chicken broth
  • Salt and pepper to taste

👩‍🍳Instructions

  1. 1

    Preheat your oven to 350 degrees Fahrenheit and lightly grease a 9 by 13 inch baking dish.

  2. 2

    Cook the spaghetti in a large pot of salted water according to the package directions, then drain well.

  3. 3

    In a large bowl, stir together the cooked chicken, sour cream, mayonnaise, garlic powder, onion powder, and chicken broth until smooth.

  4. 4

    Add the cooked pasta, half of the cheddar cheese, and half of the Parmesan cheese to the bowl. Toss everything together until well coated.

  5. 5

    Pour the mixture into your prepared baking dish and top with the remaining cheddar and Parmesan cheese.

  6. 6

    Bake for 20 to 25 minutes or until the sauce is bubbly and the cheese on top is melted and golden.

💡 Tips

Store any leftovers in an airtight container in the refrigerator for up to three days. When you are ready to eat, reheat portions in the microwave or a warm oven until heated through. Serve this alongside a simple green salad to round out the meal.

Made this recipe? Let us know how it went.

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