Cheesy Chicken Casserole is a family-friendly meal loaded with tender pasta, juicy chicken, green chiles, and peppers in a creamy cheesy sauce. Baked until hot and bubbly, this easy casserole is perfect for busy weeknights.

Cheesy Chicken Casserole in a casseroeldish and plated

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Holly’s Recipe Highlights: Cheesy Chicken Casserole

  • Flavor: This casserole is rich, creamy, with savory chicken, sharp cheddar cheese, mild green chiles, and a hint of warmth from chili powder and seasoned salt.
  • Why Make It: Made with leftover chicken or poached chicken breasts, this casserole is super quick to prepare. It can even be prepped ahead of time!
  • Recommended Tools: You’ll need a pot, a skillet, a large mixing bowl, and a 9×13-inch casserole dish.
  • Serving Suggestions: Pair with a simple vegetable side, such as roasted asparagus or honey roasted carrots, to balance the rich and creamy flavors. 

Total Time: 1 hour Servings: 6 Cooking Method: Baked Casserole

Cheesy Chicken Casserole on a white plate

Ingredient Notes

  • Cooked Chicken: Rotisserie chicken, leftover baked chicken, or poached chicken all work for this casserole. Turkey or ham can also be used.
  • Pasta: Any medium pasta will work in this recipe. But be sure to cook it just to al dente, so it doesn’t become too soft while baking.
  • Red Bell Pepper: It adds a touch of sweetness and color to the casserole. Green bell pepper can be used instead for a slightly sharper, more savory flavor.
  • Chili Powder: It adds a warm, gentle hint of spice without making the casserole overly hot. Taco seasoning can be used as a substitute, but start with less since the flavors are stronger.
  • Condensed Cream of Chicken Soup: It creates a creamy, flavorful sauce quickly and helps bring the casserole together with minimal prep. Any cream-based soups can be used, so use whatever you have in your pantry.
  • Sharp Cheddar Cheese: Sharp cheddar gives the most flavor, while mild cheddar creates a softer taste. For extra spice, replace part of the cheddar with pepper jack cheese.
Cheesy Chicken Casserole in a white baking dish

How to Make Cheesy Chicken Casserole

  1. Boil the pasta until just firm (full recipe below).
  2. Sauté the onion and bell pepper in butter, then season.
  3. Mix all the ingredients (reserving some cheese).
  4. Spread everything into a casserole dish, top with the remaining cheddar, and bake.

Leftovers You’ll Love

Keep leftovers in an airtight container in the refrigerator for up to 4 days and in the freezer for up to 3 months.

Thaw overnight in the refrigerator. Then reheat portions in the microwave or warm larger amounts in the oven, covered, with a splash of milk if needed to loosen the sauce.

What to Serve with Chicken Casserole

Did you enjoy this Cheesy Chicken Casserole Recipe? Leave a comment and rating below.

image of Everyday Comfort cookbook by Holly Nilsson of Spend With Pennies plus text
taking a spoonful of Cheesy Chicken Casserole out of dish
4.96 from 393 votes

Cheesy Chicken Casserole

Servings 6 servings
Cheesy chicken casserole is a cozy baked pasta dinner with tender chicken, sweet peppers, green chiles, and a creamy cheddar sauce. It is easy to prep and perfect for busy nights.
Servings 6 servings
Prep Time 30 minutes
Cook Time 30 minutes
Total Time 1 hour
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Ingredients  

Instructions 

  • Heat oven to 375°F.
  • Cook shells al dente according to package directions.
  • In a skillet, melt the butter over medium heat. Add the onion and red bell pepper and cook until tender, about 5 minutes. Stir in the chili powder and seasoned salt.
  • In a large bowl, combine soup, onion mixture, milk, 2 cups cheddar cheese, and Parmesan cheese.  Mix well. Stir in chicken, green chiles, and pasta.
  • Spread into a 9×13 casserole dish. Top with remaining shredded cheddar cheese.
  • Bake for 30 to 35 minutes or until hot and bubbly.

Notes

Any medium pasta will work in this recipe. Be sure to cook it so it’s still a bit firm, it’ll cook more in the oven.
This recipe is versatile, you can swap out the chicken for ham or turkey.
If adding extra vegetables, ensure they’re pre-cooked (leftovers work well).
To Add a Bread Crumb Topping: Combine 3 tablespoons panko crumbs with 1 tablespoon melted butter (add a sprinkle of garlic powder, salt & pepper). Sprinkle over the casserole and bake as directed.
Keep leftovers in an airtight container in the refrigerator for up to 4 days. 
 
4.96 from 393 votes

Nutrition Information

Calories: 649 | Carbohydrates: 32g | Protein: 40g | Fat: 39g | Saturated Fat: 20g | Cholesterol: 138mg | Sodium: 1197mg | Potassium: 445mg | Fiber: 1g | Sugar: 5g | Vitamin A: 1420IU | Vitamin C: 18.4mg | Calcium: 573mg | Iron: 2.6mg

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

Course Casserole, Main Course
Cuisine American
Cheesy Chicken Casserole the dish and close up photo with a title
Cheesy Chicken Casserole in a casserole dish with wooden spoon and a title

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About the author

Holly Nilsson is the creator of Spend With Pennies, where she creates easy, comforting recipes made for real life. She is also the author of “Everyday Comfort,” which promises to inspire even more hearty, home-cooked meals.
See more posts by Holly

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4.96 from 393 votes (312 ratings without comment)

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Comments

  1. This is a great crowd pleaser! I like to also add a can of Rotel, and a can of Mexicorn, drained, along with black olives. Always a hit!5 stars

  2. thanks Holly!

    Easy, affordable, and a crowd pleaser. When all five people in this house enjoy it, it’s going into my regular rotation.

    Highly recommend the crispy panko topping you recommended as well!5 stars

  3. This was so good!! The only changes I made was to add garlic to the mix & extra cheese on top. I ended up dividing this to send a pan to my son’s house to share. They loved it too!!
    Definitely a keeper!! Thank you!5 stars

    1. Unfortunately we don’t have the option to convert to metric so I recommend using an online converter to help determine the proper amounts. I hope that helps!

  4. What a fantastic recipe! I really appreciate its adaptability—you can easily switch the soup base, vary the vegetables, or even use different proteins. The tip about cooking the pasta al dente before baking is incredibly helpful as well. This truly feels like a foolproof dinner option!5 stars

  5. Unless you really lie the taste of seasoned salt I would leave it out the little bit that’s in there for me overwhelms the dish3 stars

    1. I haven’t tried this in the slow cooker so it’s hard to say, please let us know how it goes for you!

  6. So good!!

    I made this with a few modifications and it is easily one of my favorite meal preps, making it again this week!

    I used quinoa noodles, added more peppers, spinach, zucchini, and garlic.

    I subbed fake cheddar and Parmesan, used oatmilk instead of milk. Also added tumeric.

    Boiled chicken breast and then shredded it.

    So freaking delicious!5 stars

  7. This casserole recipe is easy to make and tasty, but too salty. I would suggest eliminating the salt called for in the recipe and using low sodium soup.4 stars

    1. Could you not sauté the onions and peppers first? I make a similar chicken spaghetti recipe and I don’t sauté them and it’s fine. They soften in the casserole. What do you think?

      1. I’m not certain they would soften enough in this amount of time. I have tried it in another casserole and they were still crunchy. If you try it I would love to hear how it turns out!