This recipe for Chicken Spaghetti is so easy and makes a delicious comfort food meal that’s ready in minutes!

Made with cooked chicken and pasta baked in a creamy and cheesy sauce, this recipe is definitely a hearty and comforting casserole!

Assemble it ahead for the freezer or refrigerator, then pop it in the oven and bake!

close up of Chicken Spaghetti

Easy Cheesy Chicken Casserole

  • Bake and take chicken spaghetti to a party or potluck because everyone loves a hearty pasta dish!
  • Leftovers make quick and handy lunches or midnight snacks! It’s a versatile recipe that will satisfy any hungry crowd.
  • This recipe is an excellent way to sneak in some healthy veggies for those pickier eaters or for using up leftovers. This recipe pairs well with broccoli, cauliflower, or kale!
  • Make this easy chicken spaghetti recipe for a convenient dinner on busy weeknights!
  • Everything is made on the stovetop and finished in the oven, so all that’s left to complete the meal is a simple kale salad, or a side of roasted asparagus. Add some no-knead bread to soak up all that delicious sauce.
cheddar , cream , chicken , spaghetti, tomatoes , pepper , onion , parmesan, broth , butter, garlic , flour and seasonings with labels to make Chicken Spaghetti

Ingredients and Variations

CHICKEN: A rotisserie chicken is an excellent choice for chicken spaghetti because it’s hot and ready to go. But any leftover chicken or turkey will work too!

SPAGHETTI: Any thickness will do! Just be sure to cook it al dente (just cooked). Any other pasta will work but look for shapes that the tangy sauce can cling to! Try bucatini, ziti, penne, medium shells, or rotini.

For a low-carb chicken spaghetti, use spaghetti squash, or buy pre-made zoodles.

SAUCE: Fresh cream and two kinds of cheese give this dish such a robust flavor. In a pinch for time? Use a can of Campbell’s cream of chicken or mushroom soup mixed with some cubes of Velveeta cheese, or simply a jar of marinara. Look for Rotel tomatoes that have diced green chiles in them for a zesty flavor.

EXTRAS: Sliced black olives, chopped sundried tomatoes or crumbled feta cheese are all great additions that will make chicken spaghetti different every time.

process of adding ingredients together to make Chicken Spaghetti sauce

How to Make Chicken Spaghetti

This delicious recipe just takes a few simple steps.

  1. Boil the spaghetti al dente and drain.
  2. Make the cream sauce (per the recipe below) and simmer until thickened. Remove from heat and stir in cheese.
  3. Add pasta, chicken, and drained tomatoes to the sauce and stir well.
  4. Pour spaghetti mixture into a casserole dish, sprinkle with remaining cheddar cheese, and bake until golden brown on the top.
close up of Chicken Spaghetti in the dish

Storing Leftover Chicken Spaghetti

  • Fridge: Keep leftover chicken spaghetti covered in the refrigerator for up to 5 days.
  • Freezer: Freeze for up to 3 months in an airtight container.
  • Reheat: Thaw frozen portions in the fridge before reheating portions in the microwave.
top view of Chicken Spaghetti on a plate with a salad

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Chicken Spaghetti

Make this easy chicken spaghetti recipe with simple ingredients and quick prep, for a creamy, cheesy, hearty and delicious casserole that everyone will love.
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 6 servings
Author Candace


9×13 casserole dish or 3 quart casserole dish


  • 8 ounces spaghetti cooked
  • ¼ cup butter
  • ½ onion chopped
  • ½ green bell pepper chopped
  • 1 clove garlic minced
  • ¼ cup flour
  • 1 teaspoon Italian seasoning
  • ½ teaspoon kosher salt or to taste
  • ½ teaspoon freshly ground black pepper or to taste
  • 1 cup chicken broth
  • ¾ cup half and half cream
  • 2 cups sharp cheddar cheese shredded, divided
  • ½ cup parmesan cheese shredded
  • 2 cups chicken chopped or shredded
  • 14 ounces diced tomatoes drained (or tomatoes with chilis, drained)


  • Preheat oven to 375°F. Grease a 9×13 inch, or 3 quart, casserole dish.
  • Cook spaghetti according to package directions to al dente and drain.
  • Meanwhile, in a medium skillet on medium heat, melt butter. Add onion, bell pepper, and garlic, and cook for 5 minutes, or until onion and pepper are softened. Stir in flour, Italian seasoning, salt, and pepper. Cook 1-2 minutes.
  • Slowly add broth and cream, stirring until smooth and bubbling. Cook for about 2 minutes, or until thickened.
  • Remove from heat. Add 1 cup cheddar and the parmesan cheese, mix until smooth and melted. Combine spaghetti, cream sauce, chicken, and drained tomatoes. Mix well then add to the casserole dish and spread evenly.
  • Sprinkle casserole with remaining cheddar and bake 25-30 minutes, or until hot and bubbling.


Leftovers will keep in the refrigerator for up to 5 days, and in the freezer for 5 months. 
5 from 12 votes↑ Click stars to rate now!
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Nutrition Information

Calories: 517 | Carbohydrates: 40g | Protein: 23g | Fat: 30g | Saturated Fat: 17g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 8g | Trans Fat: 0.3g | Cholesterol: 88mg | Sodium: 687mg | Potassium: 400mg | Fiber: 3g | Sugar: 5g | Vitamin A: 932IU | Vitamin C: 16mg | Calcium: 443mg | Iron: 2mg

Nutrition information does not include optional ingredients or garnish and is an estimate. It may change based on actual ingredients and cooking methods used.

Course Main Course
Cuisine American

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About the author

I am a wife, mother of two, and professional accountant. I love fantastic food, and it is so often the center of our lives, from everyday dinner, to family gatherings, and special evenings at fabulous restaurants. I have always loved cooking and baking, with my mom and grandma, and now, with my daughter and son. I love trying new recipes while enjoying my favorites too. I’m so happy to share them with you.
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