Chicken Spaghetti Casserole

This chicken spaghetti casserole makes a great weeknight comfort meal. It features spaghetti and a creamy, cheesy sauce made with lots of shredded chicken. If you don’t have any leftover chicken on hand, just boil up a couple of pieces, and you’ll be making this dish in no time. Your family will love this chicken spaghetti recipe. It’s hearty and homey, and everyone will want second helping of this comfort food.

chicken spaghetti casserole on a plate and glass baking dish.

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Chicken Spaghetti Bake

A chicken spaghetti bake is one of those classic Southern dishes that you will love wherever you live. This chicken and pasta recipe is one of those kid-friendly chicken casseroles that is also perfect for potlucks.

Pasta bakes are a meal to love because they are easy to prep and bake ahead, make a nice gift to a neighbor in need, or are great to throw in the freezer for a busy day. Life is hectic, and every now and then you need something that is already done and waiting!

Why This is the Best Recipe for Chicken Spaghetti

What makes this baked chicken spaghetti recipe the tastiest ever? One word – bacon! This chicken casserole recipe is perfect if you want to use up leftover chicken. Parmesan cheese on top adds the finishing touch that your taste buds will appreciate.

This chicken spaghetti casserole also gives you the opportunity to sneak in some veggies that your kids won’t even notice they’re eating!

Baked Chicken Spaghetti Ingredients

The ingredients for this baked spaghetti casserole are basic, and most of them are probably staples in your kitchen already.

  • Spaghetti – Regular or thin spaghetti both work well.
  • Chicken – chicken breasts are wonderful for this recipe, but you can use leftover rotisserie chicken or other chicken you have on hand.
  • Bacon
  • Canned tomatoes
  • Cream of mushroom soup – if you like cream of chicken soup can be used.
  • American cheese – Cheddar cheese is also a good option for this recipe.
  • Parmesan Cheese
  • Frozen peas
  • Onion
  • Garlic
  • All-purpose flour
  • Milk
chicken spaghetti casserole ingredients on a tray.

How to Make Chicken Spaghetti Casserole

This baked chicken spaghetti recipe is an uncomplicated dinner casserole with which to feed your family. Here’s how you make this easy chicken dish:

  1. Cook pasta the spaghetti in a pot according to the package directions. Drain the spaghetti noodles and set aside.
cooked spaghetti in a bowl.
  1. Cook the bacon, onion, and garlic in a large pan.
browned bacon pieces and onions in a pot.
  1. Add flour, stir it in, and cook it for a minute.
cooking flour, bacon, onion, and garlic in a pot.
  1. Add the tomatoes and milk, and cook until the mixture is thickened.
chicken spaghetti casserole sauce mixture.
  1. Stir in the American cheese.
adding shredded cheese to a pot.
  1. Add the spaghetti, chicken, and peas. Stir to combine it all.
adding chicken, spaghetti, and peas to a pot.
  1. Place the mixture in a 2½-quart casserole dish.
  2. Sprinkle Parmesan on top.
  3. Bake at 350°F for 45 minutes.
chicken spaghetti casserole in a glass baking dish.

Chicken Spaghetti Recipe Tips

Don’t overcook the pasta. Boil the spaghetti until it’s just al dente. It will continue to cook in the oven and won’t end up being too mushy.

This recipe has a topping of Parmesan cheese. You could choose to mix the Parmesan with shredded mozzarella for an even more cheesy crust. These combined cheeses give a melty texture and a lovely aged, nutty flavor from the Parmesan.

Cover the casserole dish when baking to keep everything moist. If you like the cheese topping browned, pop the dish under the broiler for a few minutes right before serving.

Recipe Variations

This chicken pasta casserole is a basic dish that you can tweak in various ways to suit your family’s taste preferences and your need to use up leftovers.

  • For a slightly spicy sauce, stir in some red pepper flakes.
  • If you like a herby taste, mix in some freshly chopped basil, oregano, or parsley.
  • Add more veggies – sauteed red bell pepper, spinach, or zucchini.
  • If you have leftovers other than chicken, you can use those instead, e.g., baked ham or roast turkey.
chicken spaghetti casserole on a plate.

What to Serve With Spaghetti Chicken Casserole

Baked chicken spaghetti is rich and quite filling. It doesn’t need fussy side dishes. So serve it with parmesan garlic bread, breadsticks, or Texas toast. It also pairs well with a fresh garden salad, cucumber salad, spinach salad, or roasted broccoli.

How to Store Chicken Spaghetti

This chicken casserole is a perfect make-ahead freezer meal. All you need to do is pop it in the oven to bake the day you need to serve it.


Keep leftovers in the fridge, in a covered container for up to 5 days. Reheat individual portions in the microwave, starting with 1 minute and adding additional time as needed.

Make-Ahead Refrigerator Instructions

Cover your casserole dish with plastic wrap, then aluminum foil, and refrigerate for up to 2 days. When ready to bake, remove the plastic wrap and re-cover with foil. Bake covered at 350 degrees for 25-30 minutes, then uncover for 10-15 minutes until hot and bubbly.

Make-Ahead Freezer Instructions

Line your baking dish with parchment paper before filling it with pasta. Freeze until solid, and then use the parchment paper for popping the frozen pasta out. Place in a freezer-safe bag and freeze for up to 4 months. The chicken spaghetti is already pre-formed for your baking dish, so all you have to do is slide it back in when you’re ready.

To Cook From Frozen

Place the pasta into the casserole dish and cover with foil. Bake covered at 350 degrees for 45-55 minutes, then remove the foil and cook another 10 minutes until heated through.

Note: If your baking dish is glass, thaw the spaghetti in the refrigerator first and bake per refrigerator instructions. Most glass dishes cannot go directly from freezer to oven.

overhead view of chicken spaghetti casserole.

More Baked Pasta Dishes

Favorite Casserole Recipes

Check out more of my easy casserole recipes and the best chicken dinner recipes here on CopyKat!

chicken spaghetti casserole on a plate and glass baking dish.

Chicken Spaghetti Casserole

Chicken Spaghetti Casserole is a classic Southern dish you will love. Creamy spaghetti is mixed with chicken, bacon, and cheese then baked to perfection.
5 from 2 votes
Print Pin Rate Add to Collection
Course: Main Course
Cuisine: American
Keyword: Casserole Recipes, Chicken Recipes, Chicken Spaghetti Bake, Chicken Spaghetti Casserole
Prep Time: 10 minutes
Cook Time: 45 minutes
Total Time: 55 minutes
Servings: 8
Calories: 299kcal


  • 4 ounces spaghetti
  • 2 slices bacon chopped
  • 1/2 cup chopped onion
  • 1 teaspoon minced garlic
  • 3 tablespoons all-purpose flour
  • 16 ounces canned diced tomatoes
  • 10.75 ounces condensed cream of mushroom soup
  • 1/2 cup milk
  • 1 cup shredded American cheese
  • 2 cups cubed chicken fully cooked
  • 10 ounces frozen green peas thawed
  • 1/2 cup grated Parmesan cheese


  • Preheat the oven to 350°F.
  • Break the spaghetti in half, and cook according to the package directions. Drain.
  • In a large saucepan, cook the bacon, onion, and garlic until the bacon is crisp.
  • Add the flour and whisk it into the bacon mixture. Cook for 1 minute.
  • Add the undrained tomatoes, soup, and milk. Cook and stir until thickened and bubbly.
  • Add shredded American cheese and stir until it has melted.
  • Add the cooked spaghetti, cubed chicken, and thawed peas.
  • Place the mixture into a 2½-quart casserole dish
  • Sprinkle Parmesan cheese on top.
  • Bake for 45 minutes.


Calories: 299kcal | Carbohydrates: 26g | Protein: 18g | Fat: 13g | Saturated Fat: 6g | Cholesterol: 47mg | Sodium: 763mg | Potassium: 451mg | Fiber: 3g | Sugar: 6g | Vitamin A: 675IU | Vitamin C: 20.7mg | Calcium: 307mg | Iron: 2.3mg

About Stephanie Manley

I recreate your favorite restaurant recipes, so you can prepare these dishes at home. I help you cook dinner, and serve up dishes you know your family will love. You can find most of the ingredients for all of the recipes in your local grocery store.

Stephanie is the author of's Dining Out in the Home, and's Dining Out in the Home 2.

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