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Chicken Spaghetti

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If you’re in the mood for a cheesy and oh so easy casserole to perk up your weekly routine, Chicken Spaghetti is just the thing! Made with juicy rotisserie chicken, packed with veggies, and of course cheese, this creamy recipe is a fun take on a classic. It’s easily baked to perfection and on the dinner table in no time!

Chicken spaghetti on a white plate.

Chicken Spaghetti

Homemade Chicken Spaghetti is a dish that’s totally customizable based on your spice level preference and it’s so easy and quick to whip up.

Skip the hassle and use a rotisserie chicken to save time. This recipe is filling on it’s own, but would serve well with some delicious garlic knots or a bruschetta appetizer!

What you need to make chicken spaghetti:

  • cooking oil: Vegetable, canola, olive, whatever your preference.
  • green bell pepper: Diced.
  • white onion: Medium in size and diced.
  • processed cheese product: Similar to Velveeta, cut into ½ inch pieces.
  • canned peas: Drained and rinsed.
  • can cream of chicken soup and can cream of mushroom soup: One of each.
  • canned tomatoes and green chiles: Similar to Ro*tel (undrained).
  • jar of sliced mushrooms: Drained and rinsed. You can also opt for fresh but we’re saving time on the prep work with these.
  • jar of pimentos: For a sweet pepper taste.
  • spaghetti: Cooked to package directions. You may also use whatever type of pasta you prefer.
  • rotisserie chicken: Shredded. 

How To Make Chicken Spaghetti

  1. Begin by preheating your oven to 350°F and grease a 9×13-inch baking dish. Set aside.
  2. Now heat a medium skillet over medium heat. Add the cooking oil, bell pepper and diced onion. Cook until the vegetables are softened, then remove from heat.
  3. In a large mixing bowl, combine the sauteed peppers, onion, cheese, tomatoes and green chiles, cream of chicken soup, cream of mushroom soup, canned peas, mushrooms, and pimentos.
  4. Add the cooked spaghetti and shredded rotisserie chicken. Transfer the mixture to the prepared baking dish.
  5. Bake for about 30 minutes or until the cheese is melted and bubbling and the ingredients are piping hot.
  6. Serve straight from the oven and enjoy!
Collage showing how to make chicken spaghetti.

Tips and Variations

  • If your mixture is too thick for your liking, before adding in the spaghetti and shredded chicken, you can thin out the mixture with ¼ – ½ cup of chicken or vegetable broth until you get the right consistency.
  • This is a packed dish and the ingredients will fill up an entire 9×13-inch baking dish. However, the recipe can be divided into 2 smaller baking dishes if needed or placed into a larger dish. 
  • Add more spice to your dish with pepper jack cheese and red pepper flakes.
  • Feel free to use freshly shredded cheese or top the casserole with freshly shredded cheese and parsley. 
  • Broil for a couple minutes at the end for a nice toasted top layer. 
Close up of chicken spaghetti on a plate.

Can you make this recipe in the Instant Pot?

Yes! We have a chicken spaghetti recipe for the Instant Pot. It’s not the exact same ingredients, but it’s close. Some of the missing ingredients could be added, but I’d be hesitant to add the cream soups. They can easily burn in a pressure cooker.

What can you use in place of rotisserie chicken?

If you can’t find rotisserie chicken, any type of chicken will work. You’ll need about 1 pound of cooked, boneless, skinless chicken. It should be shredded or chopped and seasoned to add flavor.

How can you make this recipe more or less spicy?

When made as written, this recipe isn’t spicy at all. If you’d like to add more spice, toss in some diced jalapenos or Serrano peppers. Pickled jalapenos are a great choice, too.

Another option is to choice name brand Ro*tel which has a variety of different heat levels. They range from mild to hot and everything in between.

Storage and Reheating

Refrigerator: Store any leftover Chicken Spaghetti in an airtight container in the fridge for up to four days!

Freezer: This recipe is perfect for freezing! Assemble everything as normal but don’t bake it! Wrap in plastic wrap or store in a freezer safe container for up to four months. Then when ready to eat, simply remove the plastic wrap from the casserole dish and bake as directed.

Make sure the casserole dish is safe to go from freezer to oven without damage. Otherwise, transfer the frozen casserole to the refrigerator to thaw overnight then bake.

Reheating: When reheating, warm in the oven or microwave until the dish is heated all the way through. It’s best to reheat on half powder to keep the casserole from drying out. If frozen, heat as originally instructed until the casserole is hot and bubbling.

Baked chicken casserole with pasta on a plate.

Chicken Spaghetti

Yield: About 12 Cups
Prep Time: 15 minutes
Cook Time: 35 minutes
Total Time: 50 minutes

If you’re in the mood for a cheesy and oh so easy casserole to perk up your weekly routine, Chicken Spaghetti is just the thing! Made with juicy rotisserie chicken, packed with veggies, and of course cheese, this creamy recipe is a fun take on a classic. It’s easily baked to perfection and on the dinner table in no time!

Ingredients

  • 1 tablespoon cooking oil
  • 1 green bell pepper, diced
  • ½ medium white onion, diced
  • 1 pound processed cheese product, cut into ½ inch pieces (similar to Velveeta)
  • 15 ounce can peas, drained and rinsed
  • 10.5 ounce can cream of chicken soup
  • 10.5 ounce can cream of mushroom soup
  • 10 ounce can tomatoes and green chiles (similar to Ro*tel)
  • 4.5 ounce jar sliced mushrooms, drained and rinsed
  • 4 ounce jar pimentos
  • 1 pound spaghetti, cooked to package directions
  • 1 pound rotisserie chicken, shredded

Instructions

  1. Preheat the oven to 350°F, and grease a 9x13-inch baking dish. Set aside.
  2. Heat a medium skillet over medium heat. Add the cooking oil, bell pepper and onion. Cook until the vegetables are softened, then remove from heat.
  3. In a large mixing bowl, combine the sauteed peppers, onions, cheese, tomatoes and green chiles, cream of chicken soup, cream of mushroom soup, peas, mushrooms and pimentos.
  4. Add the cooked spaghetti and shredded chicken. Transfer the mixture to the prepared baking dish.
  5. Bake for 30 minutes or until the cheese is melted and the ingredients are hot.
  6. Serve hot. See post for storage options.

Notes

*The calories listed are an approximation based on the ingredients in the recipe card and a serving size of 1 cup of chicken spaghetti. Actual calories will vary.

*For more information, tips, and answers to frequently asked questions, please refer to the post.

*If the ingredients are thick prior to adding the spaghetti and chicken, thin them out with ¼ - ½ cup of chicken or vegetable broth.

*The ingredients fill up an entire 9x13-inch baking dish. It can be divided into 2 smaller dishes if needed or placed into a larger dish if desired.

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As an Amazon Associate and member of other affiliate programs, I earn from qualifying purchases.

Nutrition Information:
Yield: 12 Serving Size: 1 cup
Amount Per Serving: Calories: 339Total Fat: 16gSaturated Fat: 7gTrans Fat: 0gUnsaturated Fat: 7gCholesterol: 69mgSodium: 931mgCarbohydrates: 27gFiber: 4gSugar: 8gProtein: 23g

*The calories are an estimate and are based on the ingredients and serving size listed. The calories can vary depending on the brand of product purchased.

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