Chicken Spaghetti sauce and bowls of chicken, pasta and cheeseHomemade Chicken Spaghetti is an easy, cheesy casserole that definitely tops our list.

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 salad for the perfect meal!

close up of Chicken Spaghetti in the dish

An Easy Casserole

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

  • Filling and satisfying, this chicken spaghetti casserole is simple to make.
  • 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 chicken breasts!

Ingredients for Chicken Spaghetti

ChickenI usually make this chicken spaghetti recipe with rotisserie chicken since it’s easy; simply shred two cups. If using raw chicken breasts, either poach or bake and then shred it. You can also make a big batch of crock pot shredded chicken to keep in the freezer.

Spaghetti – Use any long pasta you have on hand. Cook it al dente (which means firm) as it will cook more in the oven as the spaghetti bakes.

Sauce – I love the from-scratch version of the sauce for this recipe, but if you’re in a rush, I’ve included a shortcut version too. Green or red peppers add flavor while cream and cheese help make a rich and flavorful 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 al dente
  2. Prepare the cream sauce (per the recipe below) and cook until thick and bubbly. Remove from the heat and add in the cheese.
  3. Combine the pasta, chicken, and diced tomatoes in a greased casserole dish.
  4. Top with more cheese and bake until bubbly!
  5. 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 – be sure to buy the Rotel without lime added!

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

  1. Sautee the bell pepper and onion in butter until tender.
  2. Stir in ¾ pound diced processed cheese (like Velveeta cheese) and one can of cream of mushroom soup (or cream of chicken soup). Heat until melted and creamy.
  3. Season with ½ teaspoon each of onion powder, garlic powder, and black pepper if you’d like. I skip the salt, as the cheese and condensed soup have enough for my liking.
  4. Continue as directed in the recipe by adding diced tomatoes and shredded or bite-size pieces of chicken.

What to Serve With Spaghetti Casserole

Baked chicken spaghetti is rich and filling so it doesn’t need much on the side. Serve up the same favorites you serve with lasagna like a fresh salad and some dinner rolls, biscuits, or garlic bread.

plated Chicken Spaghetti with casserole dish in the back full

Leftovers & Meal Prep

Store leftovers in an airtight container in the refrigerator for up to 4 days.

Chicken spaghetti freezes very well and can be frozen before baking for up to four months.

To bake from frozen, cover with aluminum foil to prevent the cheese topping from overcooking and bake at 375°F for about an hour, or until it is piping hot throughout! Be careful as most glass dishes cannot go from freezer to oven)

Freezer Tip

If preparing ahead of time and freezing, line your baking dish with parchment paper. Once frozen, lift the casserole from the baking dish, wrap it tightly with plastic wrap, and freeze. Then just pop the chicken spaghetti back into the casserole dish when you’re ready to bake it.

More Family Favorite Casserole Recipes

chicken spaghetti in a baking dish
4.99 from 674 votes↑ Click stars to rate now!
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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 shredded chicken
  • 14 ounces diced tomatoes drained or tomatoes with chilis

For the Sauce

  • ¼ cup butter
  • 1 medium yellow onion chopped
  • 1 clove garlic minced
  • ½ green bell pepper chopped
  • ¼ cup all-purpose flour
  • 1 teaspoon Italian seasoning
  • 1 cup chicken broth
  • ¾ cup half and half or light cream
  • ½ cup shredded Parmesan cheese
  • 2 cups shredded sharp cheddar cheese divided
  • ¼ teaspoon each salt and black pepper more to taste

Instructions 

  • Preheat the oven to 375°F. Cook the spaghetti al dente in salted water according to package directions. Drain well, do not rinse.
  • Meanwhile, in a medium skillet, melt the butter over medium heat. Add onion, garlic, and bell pepper can cook until tender. Stir in the flour and Italian seasoning and cook for 1-2 minutes.
  • Gradually add the broth and cream, a bit at a time, stirring until smooth after each addition. Bring to a boil and let boil 1 minute or until thick and bubbly. 
  • Remove from heat and whisk in parmesan cheese, 1 cup cheddar cheese, and salt and pepper.
  • Combine spaghetti, chicken, cream sauce, and canned tomatoes. Mix well. Spread in a greased 9×13 dish.
  • Top with remaining 1 cup of cheddar cheese and bake for 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 674 votes

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
Chicken Spaghetti with a title
Chicken Spaghetti from scratch with writing
easy cheesy Chicken Spaghetti with a title
Chicken Spaghetti in the dish and plated with a title

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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. About how much salt and pepper do you use? I always have a hard time guessing especially on the salt. Thank you!

  2. This was delicious. It thickens up overnight What do you recommend for reheating it so that it is just like when one makes it fresh?5 stars

  3. I made this today – it was soo good! My fiancé and I loved it – we’ll be having it again for sure, especially this fall and winter!5 stars

  4. Yummy recipe! Several at my church are making meals for a friend that has just finished her last chemo. We got suggestions and one of her favorite meals is chicken spaghetti, so I searched and found this one with 5-star reviews. I tried it for my husband and I first to see how it was and it was delish!

    I did the following tweaks: added 1 stalk of thin sliced celery (I use in many of my recipes & it’s a secret ingredient), didn’t have a green pepper, so used a yellow bell pepper, added about 1/4 cup of some cilantro (cut/slice the top leaves, it is another secret ingredient in many dishes).5 stars

  5. This recipe is delicious and versatile. My kids love it with the hearty richness of the soup/Velveeta sauce whereas my husband and I prefer the lighter sauce made with cream. Pure comfort food! One time making this recipe I noticed I had some leftover bacon (I know, how is that possible?) so I cooked it, then diced it and threw it in. Wow! It changed the taste by adding a slight smokiness to the cheese sauce. Delicious! Another time, I had sliced black olives and threw them in-it added color and a different dimension to the dish. This is what I love about this recipe…it is amazing following the recipe but it is also very welcoming to personal additions! My personal favorite is the original recipe but I love how easily it can be tweaked for personal tastes.5 stars

  6. This recipe is the best of all the chicken spaghetti recipes. I specifically looked for one that did not rely on cream of soup, nor sour cream, nor cream cheese. This is truly from scratch and tastes like it. Five stars.5 stars

  7. This is fantastic! I have tried other casseroles that have a cheese sauce type base, but I always thought they were bland and uninspiring. Made this last night for supper. I cooked fresh chicken breasts, grated my own cheese, etc. I like a little less cheese on top and more in the sauce, so I probably used 1/2 cup cheddar for the top. I shared with my sister and her husband and by the time we all ate, there was maybe one serving left. This was no bland casserole. It was delicious! The tomatoes added a nice touch. my brother in law called me before we could finish eating, and said I could make that again, anytime. Thanks so much for this recipe. Thinking of trying it with shrimp.5 stars

  8. It did take a little bit longer than I like to make spaghetti, but it’s an easy recipe to follow. I used freshly grated cheeses too which might’ve made a tastier difference. Not to mention I have three teens plus a husband who doesn’t love to eat chicken and everyone loved this!!!5 stars

    1. Hi Pamela, please take a look at this post, which will help with making light cream (also known as half and half) from heavy cream. Enjoy the recipe!

  9. Super tasty! My family really liked it! It’s nice to have another way to serve chicken! I didn’t have a can of diced tomatoes so I just diced a couple fresh ones! I also added a bit of Cajun seasoning for a little more flavour kick.5 stars

  10. followed the “from scratch ” recipe exactly and it was delicious!! Will definitely be making this again! My whole family loved it. So glad you included your Italian seasoning recipe! perfect!!5 stars

  11. Two questions!
    I want to add a vegetable to it to save myself time, do you think a bag of frozen peas would work well? Or should I do canned peas?
    And just to confirm, 8 oz spaghetti is about half of a standard box?
    Thanks!5 stars

    1. Hi Giovanna, I haven’t tried peas but I think frozen peas will work just fine. And yes, you will want 8 oz of uncooked spaghetti which is half of a standard 1 pound box.

  12. Doesn’t seem like very many noodles. I couldn’t even find 8 oz package.
    Sounds delish, trying this weekend!

    1. Often spaghetti comes in a 16 oz package and I use half of one in this recipe. I can’t wait for you to try it Heidi, it’s delicious!

    1. Yes, that will work just fine Rebecca! We would let the casserole sit out on the counter while the oven preheats then bake according to the recipe instructions. Enjoy!

  13. Delicious! Thank you Holly! I am partially disabled and can’t stand on my feet for long periods. This recipe worked great.
    I used chicken breasts fried with extra spices (garlic plus, season salt, garlic powder etc) and cut into bite size pieces. I never really measure a whole lot. I go by my taste buds LOL but I followed the recipe pretty close. I did make a little extra sauce. It didn’t look like it was going to be enough. Maybe that has something to do with my non measuring eyeballing technique LOL.
    Anyhow it was very very tasty. It is different from most spaghetti casseroles where it just tastes like spaghetti and meat sauce baked in a pan. Its a great way to use up extra spaghetti as well. I did a conversion on google and it recommends using about 5 cups cooked.5 stars

      1. I am so happy to hear you loved this recipe Tania! To share a picture, you can post it on Instagram and tag us at @spendpennies.

  14. I had some leftover grilled chicken I needed to use so this was the recipe I settled on. I added a half cup of prepared pimento cheese that I also needed to use and blended cheddar and mozzarella on top. My husband loved it!… will definitely make it again!5 stars