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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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
- Can I use different pasta?
Yes—penne, fusilli, or even elbow macaroni work just as well. - Can I use homemade cream sauce?
Absolutely. Replace canned soup with a homemade béchamel if you prefer. - Is this casserole spicy?
Nope! It’s mild and creamy. Add crushed red pepper or diced green chilies if you like heat. - 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. - 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
Chicken Spaghetti Casserole
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Total Time: 50 minutes
- Cuisine: American
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
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.


