Chicken Spaghetti sauce and bowls of chicken, pasta and cheeseHomemade Chicken Spaghetti is one of those easy, cheesy casserole dishes that is definitely one of our favorite comfort foods!

Tender chicken and pasta are tossed in an easy homemade cheese sauce and set to bake until golden and bubbly!

Serve this with a side of homemade garlic bread and a caesar salad for a perfect meal!

chicken spaghetti in a baking dish

An Easy Casserole

I love this dish because it’s the ultimate comfort food and one that the whole family will agree on.

  • This is a simple, filling, and satisfying chicken spaghetti casserole.
  • There are two options for the creamy cheesy sauce:
    • a homemade from scratch sauce
    • OR a shortcut version for busy nights (both are listed below).
  • Just like a traditional baked spaghetti casserole, you likely have all of the ingredients on hand!
  • Prepping it is easy and even more so if you make it with rotisserie chicken or leftover Oven Baked Chicken Breasts!

Ingredients

CHICKEN: If you are making chicken spaghetti with rotisserie chicken, then there is no need to cook the chicken in advance. Just shred two cups and set aside.  If you are using raw chicken breasts, you can make poached or baked chicken breasts (although I usually have a big batch of crock pot shredded chicken in the freezer for recipes like this).

SPAGHETTI: Use any long pasta you have on hand. Cook it al dente (which means firm so it’s just cooked) as it will cook more in the oven as the spaghetti bakes.

SAUCE:  We love the from-scratch version of the sauce but if you’re really short on time, I’ve included a shortcut version too. Green or red peppers add flavor while cream cheese helps thicken the sauce. Use a sharp cheddar for the best flavor.

How to Make Chicken Spaghetti

This is an easy chicken spaghetti recipe:

  1. Boil the spaghetti until it is al dente
  2. Make the cream sauce (per the recipe below) and cook until thick and bubbly. Add in the cheeses (remove the sauce from the heat before adding the cheese).
  3. Stir in the pasta, chicken, and tomatoes and place in a greased casserole dish.
  4. Top with more cheese and bake until bubbly!

Allow the baked chicken spaghetti to rest for five minutes to help the sauce thicken.

a pot with sauce for chicken spaghetti

Short Cut Chicken Spaghetti Sauce

Short on time? Make a Short Cut Chicken Spaghetti Recipe! Try it with canned cream of mushroom soup, and a can or two of Rotel tomatoes instead! It will still be tasty and satisfying. Be sure to buy the Rotel without lime added!

Here’s a quick and easy shortcut sauce for chicken spaghetti:

  1. Sautee red peppers and onions.
  2. Add in one can of cream of mushroom soup (or cream of chicken soup) and 3/4 pound diced processed cheese (like Velveeta cheese). Heat until melted and creamy.
  3. Season with onion and garlic powders and pepper (the Velveeta and soup have plenty of salt already, so you may not need to add any.)
  4. Continue as directed in the recipe by adding bite-sized pieces of chicken.

What to Serve With Spaghetti Casserole: Serve up whatever your favorites to go along with an Easy Lasagna or Cheesy Chicken Casserole are. For us, that usually means a fresh green salad (or kale salad) and some dinner rolls or biscuits.

plated Chicken Spaghetti with casserole dish in the back full

Leftovers?

Keep leftovers in airtight containers for up to 4 days.

Can You Freeze Chicken Spaghetti? Chicken spaghetti freezes exceptionally well, so go ahead and make it in advance. Once you place it in the casserole dish, you don’t need to bake it first, just freeze it for up to four months.

Here’s a little trick: Line your dish with parchment paper and let it freeze solid, then transfer it to a large freezer bag. That way you don’t have to tie up your casserole dish for months. The chicken spaghetti is already pre-formed for the dish, so all you have to do is slide it back in when you’re ready to reheat.

You can cook this directly from frozen (but be careful, most glass dishes cannot go from freezer to oven). Cover it in foil to prevent the cheese topping from overcooking. Cook at 375°F for about an hour, or until it is piping hot throughout!

Baked chicken spaghetti is rich and super filling. It doesn’t need many fussy side dishes. I like to serve it with breadsticks or garlic bread, and a cucumber salad or fresh green salad dressed with vinaigrette for some color and crunch.

More Family Favorite Casseroles

chicken spaghetti in a baking dish
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Homemade Chicken Spaghetti

This easy cheesy Chicken Spaghetti casserole combines tender chicken and spaghetti in a homemade cheese sauce!
Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Servings 6 servings

Ingredients  

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

Instructions 

  • Preheat oven to 375°F. Cook spaghetti al dente. Drain well.
  • Cook onion, garlic, and bell pepper in butter until tender. Add flour and seasonings. Cook for 1-2 minutes. Stir in broth and cream a little bit at a time until smooth. Cook until thick and bubbly. 
  • Remove from heat, add parmesan cheese and half the cheddar cheese. Mix until smooth and melted. Season with salt and pepper to taste.
  • Combine spaghetti, chicken, cream sauce, and canned tomatoes. Mix well. Spread in a greased 9x13 dish.
  • Top with remaining cheddar cheese and bake 25-30 minutes or until hot and bubbly.

Video

Notes

  • Don't overcook the pasta, it'll cook more as it bakes.
  • Pre-shredded cheese does work in this recipe but shredding your own makes for a smoother sauce.
  • Sharp cheddar adds the best flavor.
 
4.99 from 310 votes↑ Click stars to rate now!
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Nutrition Information

Calories: 518 | Carbohydrates: 38g | Protein: 22g | Fat: 30g | Saturated Fat: 18g | Cholesterol: 95mg | Sodium: 606mg | Potassium: 377mg | Fiber: 2g | Sugar: 3g | Vitamin A: 970IU | Vitamin C: 18.6mg | Calcium: 425mg | Iron: 2.1mg

Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.

Course Casserole, Chicken, Main Course, Pasta
Cuisine American, Italian

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taking a spoonful of Chicken Spaghetti out of the dish with a title
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Chicken Spaghetti in the casserole dish and plated with writing

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About the author

Holly is a wine and cheese lover, recipe creator, shopping enthusiast and self appointed foodie. Her greatest passion is creating in the kitchen and making deliciously comforting recipes for the everyday home cook!
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Comments

  1. I am making this wonderful recipe for the third time. The one change my family has preferred is that instead of using the Cheddar cheese (which can get greasy when it melts) we have substituted the 5 (or 6) Italian cheese blend that is available at almost any grocery store. I also throw some fresh chopped Basil on the top just as I take it out of the oven.5 stars

  2. This was delicious! I added celery, mushrooms and carrots, did not use bell pepper, but did use rotel. I don’t usually buy cream, but it makes a huge difference in these recipes.5 stars

  3. Hi there! If I premake it the night before and put it in my fridge, do I just follow the baking directions directly from the fridge?

    Thank you.

    1. Hi Pokey, we would let the casserole sit out on the counter while the oven preheats then bake according to the recipe instructions. Enjoy!

  4. Oh gosh this looks sooo good but husband hates cheddar cheese. Is there another cheese you could recommend that would still give a great but not as intense flavor?

  5. I have made this recipe more than once and seems like every time it’s better lol.. My husband even complemented it today to how delicious it was. Love this recipe!5 stars

  6. Yum yum!! Delicious! I made this for dinner tonight. I used fresh peppers and tomatoes from our garden. I boiled 2 chicken thighs. That was plenty of meat. This was a very good dish. We were looking for something different for supper and this worked. We will make this again!5 stars

  7. Absolutely delicious !!! You can taste all the ingredients in every bite. Husband can’t stop raving about it. Thank you. I love seeing all your recipes and tips.5 stars

  8. So yummy!! The whole family loved it! My father in law usually won’t eat anything that’s a little different but even he loved it!5 stars

  9. Used this recipe and substituted regular flour for coconut flour and keto pasta zero noodles!!! Was so good and keto friendly!!!5 stars

  10. Very tasty! Made it with fresh tomatoes and a whole green pepper but everything else the same. Would make it again for sure!5 stars

  11. So good!!! I didn’t do the green peppers and added a little extra chicken broth. The whole pan was gone.5 stars

  12. I made this for dinner and we all loved it! I combined a higher grade fresh grated mild cheddar cheese with regular SHARP CHEDDAR CHEESE in the mixture and on top of casserole! It was delicious!5 stars

  13. The recipe is great! But I gave it four stars because I had to add a cup of water to the roux because it was too thick without it. I added pasta water to make a creamier texture.4 stars

  14. I don’t cook much anymore but my grandson is going to college in the town I live in and so I’d like to make some easy home cooked meals. I like your recipes