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The Easy Chicken Casserole My Family Loves

6 hours ago 3

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Chicken Spaghetti sauce and bowls of chicken, pasta and cheeseThis Chicken Spaghetti is a creamy, cheesy comfort food that is baked until bubbly. It’s an easy casserole that comes together fast, with enough to feed a crowd. I love serving it with a side of homemade garlic bread and a simple green salad.

taking Chicken Spaghetti out of the dish

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Holly’s Recipe Highlights: Chicken Spaghetti

Flavor: Creamy, cheesy, and cozy with sharp cheddar flavor, tender chicken, and tomatoes that add brightness without overpowering the sauce.

Recommended Tools: A 9×13 casserole dish and a box grater make prep quick and the sauce extra smooth.

Prep Tip: Don’t overcook the pasta; it’ll cook more in the oven as the casserole bakes.

Freezer Meal: This recipe makes a great freezer meal either as individual servings or a whole casserole.

Total Time: 1 Hr Serves: 6 Cooking Method: Baked

Ingredient Notes

Ingredients for chicken spaghetti on a sheet pan
  • Chicken: Use cooked chicken (rotisserie chicken) to make this easy. You can also use leftovers or make some shredded chicken.
  • Pasta: Any pasta works, but long noodles hold the sauce best.
  • Seasonings: You can swap fresh with 1 teaspoon onion powder and ½ teaspoon garlic powder for the fresh onion/garlic. Make your own Italian seasoning or use store-bought.
  • Rotel: Lightly drain the Rotel tomatoes to avoid a watery bake. For a milder dish, use petite diced tomatoes.
  • Bell Pepper: Adds flavor and a little sweetness.
  • Cream: Half and half or light cream makes the sauce creamy without being too rich. Milk can be used, but the sauce will be less rich.
  • Cheese: Sharp cheddar cheese brings the best flavor. A blend of cheddar and Monterey Jack will make for extra melt.

Variations

  • Add-Ins: Add sauteed mushrooms, corn, or stir in some spinach at the end.
  • Heat Level: Want to tame the heat? Use plain diced tomatoes and a pinch of paprika instead of chilies.
  • Topping: For an extra golden top, sprinkle it with extra Parmesan.

How to Make Chicken Spaghetti

chicken spaghetti in a baking dish topped with cheese
  1. Top with remaining cheese. Bake until hot and bubbly.
  • Smooth Sauce: Add liquids slowly to the roux and whisk each time.
  • Best Melt: Shred cheese from a block for an extra smooth sauce.
  • Golden Top: If the top browns too fast, cover loosely with foil for the last 10 minutes.
  • Make Ahead: Assemble, cover, and refrigerate, then bake. Add 10 to 15 minutes if baking straight from the fridge.
  • Crockpot: Easily make this recipe in a slow cooker following this Crockpot Chicken Spaghetti recipe.
plated Chicken Spaghetti with casserole dish in the back full

Store, Freeze, and Reheat Tips

Store leftovers in an airtight container in the refrigerator for 4 days. It can also be frozen, before or after baking, for 4 months in airtight containers. Thaw overnight in the fridge.

To reheat, microwave with a splash of milk or broth and cover to prevent drying. It can also be reheated in the oven at 350°F, covered until hot, then uncovered briefly to refresh the cheesy top.

More Creamy & Cheesy Pasta Casseroles

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

image of Everyday Comfort cookbook by Holly Nilsson of Spend With Pennies plus text

Prep Time 20 minutes

Cook Time 40 minutes

Total Time 1 hour

For the Sauce

  • ¼ cup salted 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
  • 1 cup half and half or light cream
  • ½ cup shredded Parmesan cheese
  • 2 cups shredded sharp cheddar cheese divided
  • ¼ teaspoon salt more to taste
  • ¼ teaspoon black pepper more to taste
  • Preheat the oven to 375°F. Grease a 9×13-inch baking dish.

  • Cook the spaghetti al dente in a large pot of salted water according to package directions. Drain well, do not rinse.

  • Meanwhile, to make the sauce, in a large skillet, melt the butter over medium heat. Add onion, garlic, and bell pepper and cook until tender. Stir in the flour and Italian seasoning and cook for 1-2 minutes.

  • Gradually add the broth and half and half, a bit at a time, whisking 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 the Parmesan cheese, 1 cup cheddar cheese, and salt and pepper.

  • Combine spaghetti, chicken, cream sauce, and canned tomatoes. Mix well. Spread in baking dish.

  • Top with remaining 1 cup of cheddar cheese and bake for 25-30 minutes or until hot and bubbly.

  • Pasta: Don’t overcook the pasta, it will cook more as it bakes.
  • Cheese: Pre-shredded cheese works in this recipe, but shredding your own makes for a smoother sauce. Sharp cheddar adds the best flavor.
  • To Make a Shortcut Sauce: Cook the vegetables (onion, garlic, bell pepper) as directed. Add ¾ pound cubed Velveeta cheese, 10 oz condensed cream of mushroom soup or cream of chicken soup, and drained Rotel tomatoes. Stir until melted. Skip the salt and add ½ teaspoon each of onion powder, garlic powder, and black pepper.
  • Keep leftovers in an airtight container in the refrigerator for 4 days and in the freezer for 3 months.

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

© SpendWithPennies.com. Content and photographs are copyright protected. Sharing of this recipe is both encouraged and appreciated. Copying and/or pasting full recipes to any social media is strictly prohibited. Please view my photo use policy here.

Chicken Spaghetti in the baking dish and plated with a title
Chicken Spaghetti with 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 the best selling cookbook “Everyday Comfort,” which delivers hearty, home-cooked meals designed for real life.
See more posts by Holly

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