Close up of chicken spaghetti on a white plate ready to be eaten.
American Recipes, Casserole, Chicken, Dinner, Pasta

Best Chicken Spaghetti Casserole

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This is hands down the Best Chicken Spaghetti Casserole. It is so easy to make and full of cheesy goodness. Made with juicy shredded chicken and pasta, then covered in a yummy cheese sauce and baked to perfection. This will become one of your family’s favorite homemade meals.

Best chicken spaghetti casserole on a white plate. Served with a slice of cheese bread.

Chicken Spaghetti Ingredients

  • Spaghetti Noodles – Whole wheat and linguine noodles also work well.
  • Shredded Chicken – I used rotisserie chicken, but you can substitute with any shredded chicken.
  • Unsalted Butter – Used to help saute the veggies.
  • Yellow Onion – I prefer yellow onions, but you can use any that you prefer.
  • Garlic – Fresh minced garlic works best.
  • Green Pepper – The recipe calls for half a green pepper. But you can use a full one.
  • Italian Seasoning – This adds so much flavor and should not be skipped. You can make your own by combining equal parts basil, rosemary, oregano, and parsley.
  • Salt & Black Pepper – You can adjust to your liking.
  • Cream of Chicken Soup – Can be substituted with cream of mushroom or cream of celery.
  • Low Sodium Chicken Broth – The base for the cheesy sauce.
  • Ro-tel Diced Tomatoes & Green Chilies – If you don’t like any spice. Substitute with plain drained diced tomatoes.
  • Colby Jack Cheese – If you don’t have Colby Jack cheese. You can substitute with 3/4 cup mozzarella and 3/4 cup cheddar cheese.
All the ingredients to make cheesy chicken spaghetti.

How To Make The Best Chicken Spaghetti Casserole

When making chicken spaghetti I like to use rotisserie chicken and shred it. But when I know I am going to have a busy week. I will make a large batch of crockpot shredded chicken and put it in the freezer. That way I can pull it out for meals during the week when I need it.

  • Preheat the oven to 375 degrees. Then prepare a 9×13 baking dish by coating it with a non-stick cooking spray. Then set aside.
  • Boil 8 cups of water with a dash of salt in a large pot. Then, add spaghetti and cook one minute less than the directions on the box, or until cooked al dente and drain well.
  • In a large skillet over medium-high heat melt butter. Then add in garlic, green pepper, and onion. Cook 4-5 minutes or until onions become translucent.
  • Then, add in the diced tomatoes and green chilies, chicken broth, cream of chicken soup, Italian seasoning, salt, and black pepper. Mix well and bring to a simmer, cook for 2-3 minutes until sauce begins to thicken and is bubbly.
  • Lower heat to medium-low, add 1 1/2 cups of Colby Jack cheese. Mix well until the cheesy has completely melted and is smooth. Then remove from heat and set aside.
  • In a large mixing bowl or the pot, you made the spaghetti in. Add cooked spaghetti and shredded chicken. Then pour cheesy sauce over the top and mix until well incorporated.
  • In the prepared baking dish add in spaghetti and sauce mixture. Spread out evenly and cover the top with the remaining cheese.
  • Bake casserole for 25-30 minutes or until the cheese has completely melted and bubbly.
  • Serve while hot and enjoy!

Does It Make Good Leftovers?

Absolutely! This casserole is one of those recipes that taste even better the next day. It allows all the flavor to mix together and is delicious. It will stay good in the fridge for up to 4 days. But if you are going to want to save it longer then that. You will want to put it in the freezer.

It also makes a great freezer meal. Follow all of the steps except for baking it. Then allow it to cool down to room temperature. Cover with several layers of plastic wrap to make an airtight seal. It will stay good in the freezer for up to 4 months. When you are ready to use it let it thaw in the refrigerator overnight. Then bake at 375 degrees for 25-30 minutes.

Close up of chicken spaghetti on a white plate ready to be eaten.

Best Chicken Spaghetti Casserole

This is hands down the Best Chicken Spaghetti Casserole. It is so easy to make and full of cheesy goodness. Made with juicy shredded chicken and pasta, then covered in a yummy cheese sauce and baked to perfection. This will become one of your family's favorite homemade meals.
5 from 3 votes
Prep Time 10 mins
Cook Time 50 mins
Total Time 1 hr
Course Main Course, pasta
Cuisine American
Servings 8
Calories 464 kcal

Ingredients
  

  • 16 oz spaghetti (cooked)
  • cups shredded chicken
  • 2 tbsp unsalted butter
  • 1 medium yellow onion (diced)
  • 2 cloves garlic (minced)
  • ½ green pepper (diced)
  • 1 tsp Italian seasoning
  • ½ tsp salt
  • 1 tsp ground black pepper
  • 1 15 oz can cream of chicken
  • 1 cup chicken broth
  • 1 15 oz can Ro-tel diced tomatoes & green chilies (drained)
  • cups Colby Jack cheese (grated and divided in 1 ½ cups and 1 cup)

Instructions
 

  • Preheat the oven to 375 degrees. Then prepare a 9×13 baking dish by coating it with a non-stick cooking spray. Then set aside.
  • Boil 8 cups of water with a dash of salt in a large pot. Then, add spaghetti and cook one minute less than the directions on the box, or until cooked al dente and drain well.
  • In a large skillet over medium-high heat melt butter. Then add in garlic, green pepper, and onion. Cook 4-5 minutes or until onions become translucent.
  • Then, add in the diced tomatoes and green chilies, chicken broth, cream of chicken soup, Italian seasoning, salt, and black pepper. Mix well and bring to a simmer, cook for 2-3 minutes until sauce begins to thicken and is bubbly.
  • Lower heat to medium-low, add 1 1/2 cups of Colby Jack cheese. Mix well until the cheesy has completely melted and is smooth. Then remove from heat and set aside.
  • In a large mixing bowl or the pot, you made the spaghetti in. Add cooked spaghetti and shredded chicken. Then pour cheesy sauce over the top and mix until well incorporated.
  • In the prepared baking dish add in spaghetti and sauce mixture. Spread out evenly and cover the top with the remaining cheese.
  • Bake casserole for 25-30 minutes or until the cheese has completely melted and bubbly.
  • Serve while hot and enjoy!

Notes

*Nutrition Disclaimer: All information presented on this site is intended for informational purposes only. Nutrition facts are an estimate and not guaranteed to be accurate. I am not a certified nutritionist and any nutritional information shared on Modernmealmakeover.com should only be used as a general guideline.

Nutrition

Calories: 464kcalCarbohydrates: 40gProtein: 29.2gFat: 20.2gSaturated Fat: 10.8gCholesterol: 119mgSodium: 1101mgPotassium: 276mgFiber: 0.9gSugar: 2.5gVitamin D: 2µgCalcium: 289mgIron: 3mg
Keyword Best Chicken Spaghetti, Chcicken Spaghetti, Chicken Spaghetti Casserole
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One Comment

  1. Bintu | Recipes From A Pantry

    5 stars
    This dish screams comfort food to me and would make a perfect weeknight dinner in my house! So delicious.

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