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Home » Recipe Index » Chicken Spaghetti Casserole

Chicken Spaghetti Casserole

April 22, 2025 by Lidia

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Creamy, cheesy, and loaded with comforting flavor, this Chicken Spaghetti Casserole is the kind of meal that brings everyone running to the table. Made with tender chicken, a rich creamy sauce, and perfectly cooked spaghetti baked until bubbly, it’s the ultimate weeknight comfort dish. Whether you’re feeding a family or prepping for potluck, this easy-to-make casserole is a guaranteed crowd-pleaser.

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Chicken Spaghetti Casserole
Chicken Spaghetti Casserole

Why You’ll Love This Recipe
Classic Comfort – Creamy, cheesy pasta baked to perfection.
Make-Ahead Friendly – Perfect for meal prep or freezer meals.
Kid-Approved – Simple, mild flavors that the whole family will love.
Customizable – Add veggies or swap in different cheeses.
Hearty & Filling – A complete meal in one dish.

Ingredients You’ll Need

For the Casserole:

  • 12 oz spaghetti (broken in half)
  • 2 cups cooked chicken, shredded (rotisserie works great)
  • 2 tbsp olive oil or butter
  • 1 small onion, finely chopped
  • ½ red bell pepper, diced
  • ½ green bell pepper, diced
  • 2 cloves garlic, minced
  • 1 can (10.5 oz) cream of chicken soup
  • 1 can (10.5 oz) cream of mushroom soup
  • 1 cup sour cream
  • 1 ½ cups shredded cheddar cheese
  • ½ cup grated Parmesan cheese
  • ½ tsp salt
  • ½ tsp black pepper
  • ¼ tsp paprika (optional)
  • ½ cup chicken broth or reserved pasta water (to loosen the sauce)

For the Topping:

  • ½ cup shredded cheddar cheese
  • ¼ cup breadcrumbs (optional, for a crunchy top)
  • Chopped parsley for garnish (optional)

Tools You’ll Need

  • Large pot for boiling pasta
  • Large skillet for sautéing vegetables
  • Mixing bowl
  • 9×13-inch baking dish
  • Measuring cups and spoons
  • Spatula or spoon

Step-by-Step Instructions

Step 1: Cook the Spaghetti
Bring a large pot of salted water to a boil.
Cook spaghetti until just al dente (about 1 minute less than package directions).
Drain and reserve ½ cup of the pasta water.

Step 2: Sauté the Veggies
In a skillet over medium heat, heat olive oil or butter.
Add chopped onion and bell peppers, cooking for 5–6 minutes until soft.
Add garlic and cook for 1 more minute.

Step 3: Make the Creamy Mixture
In a large mixing bowl, combine cream of chicken soup, cream of mushroom soup, sour cream, cheddar cheese, Parmesan, salt, pepper, and paprika.
Stir in the sautéed vegetables and cooked chicken.

Step 4: Assemble the Casserole
Preheat oven to 350°F (175°C).
Add cooked spaghetti to the sauce mixture. Stir in ½ cup pasta water or broth until everything is coated and creamy.
Spread into a greased 9×13-inch baking dish.
Top with the remaining cheddar cheese and breadcrumbs, if using.

Step 5: Bake and Serve
Bake uncovered for 25–30 minutes, until bubbly and golden on top.
Let rest for 5–10 minutes before serving.
Garnish with parsley if desired.

Tips for a Perfect Chicken Spaghetti Casserole
Use Rotisserie Chicken – A great time-saver that adds flavor.
Cook Pasta Al Dente – It will continue to cook in the oven.
Add Veggies – Try mushrooms, broccoli, or spinach for extra nutrition.
Mix Up the Cheese – Monterey Jack, mozzarella, or pepper jack work great too.

Serving Suggestions

  • Garlic Bread – To mop up that creamy sauce.
  • Green Salad – A crisp, fresh side balances the richness.
  • Roasted Veggies – Carrots, green beans, or asparagus pair beautifully.
  • Iced Tea or Lemonade – Refreshing drinks for a hearty meal.

How to Store & Reheat

Storing:

  • Refrigerator: Store leftovers in an airtight container for up to 4 days.
  • Freezer: Freeze the casserole before baking, tightly wrapped, for up to 2 months.

Reheating:

  • Oven: Cover with foil and bake at 350°F for 20–25 minutes until heated through.
  • Microwave: Reheat individual portions in 30-second bursts.

Frequently Asked Questions

  1. Can I use different pasta?
    Yes—penne, fusilli, or even elbow macaroni work just as well.
  2. Can I use homemade cream sauce?
    Absolutely. Replace canned soup with a homemade béchamel if you prefer.
  3. Is this casserole spicy?
    Nope! It’s mild and creamy. Add crushed red pepper or diced green chilies if you like heat.
  4. Can I make it ahead of time?
    Yes—assemble it up to a day in advance, cover, and refrigerate. Add 10–15 minutes to the bake time.
  5. Can I skip the breadcrumbs?
    Yes! The cheese topping alone still gives a nice golden finish.

Final Thoughts
This Chicken Spaghetti Casserole is a creamy, cheesy, comforting classic that’s easy to make and sure to please. Whether you’re cooking for your family or feeding a crowd, it’s the kind of dish that brings people together with every bite. Make it once, and it’ll become a go-to in your dinner rotation.

Try it today and tag your creations—I’d love to see how you make it your own!

Preparation Time: 20 minutes
Cooking Time: 30 minutes
Cuisine: American

Nutritional Information (Per Serving):
Calories: 480 | Protein: 28g | Carbohydrates: 34g | Fat: 26g | Fiber: 2g | Sodium: 710mg

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Chicken Spaghetti Casserole

Chicken Spaghetti Casserole

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  • Author: Lidia
  • Prep Time: 20 minutes
  • Cook Time: 30 minutes
  • Total Time: 50 minutes
  • Cuisine: American
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Description

Creamy, cheesy, and loaded with comforting flavor, this Chicken Spaghetti Casserole is the kind of meal that brings everyone running to the table. Made with tender chicken, a rich creamy sauce, and perfectly cooked spaghetti baked until bubbly, it’s the ultimate weeknight comfort dish. Whether you’re feeding a family or prepping for potluck, this easy-to-make casserole is a guaranteed crowd-pleaser.

Want recipes like this delivered straight to your inbox? Subscribe now for family-style favorites and freezer-friendly dinners you’ll love to make.


Ingredients

Scale

For the Casserole:

  • 12 oz spaghetti (broken in half)

  • 2 cups cooked chicken, shredded (rotisserie works great)

  • 2 tbsp olive oil or butter

  • 1 small onion, finely chopped

  • ½ red bell pepper, diced

  • ½ green bell pepper, diced

  • 2 cloves garlic, minced

  • 1 can (10.5 oz) cream of chicken soup

  • 1 can (10.5 oz) cream of mushroom soup

  • 1 cup sour cream

  • 1 ½ cups shredded cheddar cheese

  • ½ cup grated Parmesan cheese

  • ½ tsp salt

  • ½ tsp black pepper

  • ¼ tsp paprika (optional)

  • ½ cup chicken broth or reserved pasta water (to loosen the sauce)

For the Topping:

  • ½ cup shredded cheddar cheese

  • ¼ cup breadcrumbs (optional, for a crunchy top)

  • Chopped parsley for garnish (optional)


Instructions

Step 1: Cook the Spaghetti
Bring a large pot of salted water to a boil.
Cook spaghetti until just al dente (about 1 minute less than package directions).
Drain and reserve ½ cup of the pasta water.

Step 2: Sauté the Veggies
In a skillet over medium heat, heat olive oil or butter.
Add chopped onion and bell peppers, cooking for 5–6 minutes until soft.
Add garlic and cook for 1 more minute.

Step 3: Make the Creamy Mixture
In a large mixing bowl, combine cream of chicken soup, cream of mushroom soup, sour cream, cheddar cheese, Parmesan, salt, pepper, and paprika.
Stir in the sautéed vegetables and cooked chicken.

Step 4: Assemble the Casserole
Preheat oven to 350°F (175°C).
Add cooked spaghetti to the sauce mixture. Stir in ½ cup pasta water or broth until everything is coated and creamy.
Spread into a greased 9×13-inch baking dish.
Top with the remaining cheddar cheese and breadcrumbs, if using.

Step 5: Bake and Serve
Bake uncovered for 25–30 minutes, until bubbly and golden on top.
Let rest for 5–10 minutes before serving.
Garnish with parsley if desired.


Notes

Use Rotisserie Chicken – A great time-saver that adds flavor.
Cook Pasta Al Dente – It will continue to cook in the oven.
Add Veggies – Try mushrooms, broccoli, or spinach for extra nutrition.
Mix Up the Cheese – Monterey Jack, mozzarella, or pepper jack work great too.

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Share a photo and tag us — we can’t wait to see what you’ve made!

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