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A plate of pasta below a fork holding pasta up.

Chicken Spaghetti

Easy chicken spaghetti is total comfort food and it's so simple to throw together. 
Course Main Course
Cuisine American
Keyword casserole, comfort food
Prep Time 10 minutes
Cook Time 40 minutes
Total Time 50 minutes
Servings 8
Calories 637kcal


  • 16 ounces spaghetti noodles
  • 2 cups cooked shredded chicken
  • 3 tablespoons butter
  • ¼ cup all purpose flour
  • 2 cups milk
  • 16 ounces grated cheddar divided
  • 4 ounces cream cheese
  • 1 teaspoon garlic powder
  • 1 teaspoon onion powder
  • ½ teaspoon salt
  • ½ teaspoon black pepper
  • 10.5 ounces canned diced tomatoes with green chiles drained
  • 1 teaspoon dried parsley


  • Bring a large pot of water to a boil and add the spaghetti. Cook for 2 minutes less than the package directions state. Drain pasta and add to a large mixing bowl with the chicken.
  • While pasta is cooking, melt the butter in a medium sauce pan over medium heat. Whisk in the flour and cook for 1 minute.
  • Whisk the milk into the flour and cook until thickened, whisking constantly, about 3 minutes.
  • Remove the milk mixture from the heat and whisk in 10 ounces of grated cheddar along with the cream cheese, garlic powder, onion powder, salt, and pepper. Whisk until mixture is smooth and creamy and the cheese has fully melted.
  • Pour the cheese sauce over the spaghetti and chicken and add the canned tomatoes and chiles.
  • Stir well to combine and spread mixture into a greased 9x13 baking dish. Sprinkle the remaining cheddar over the top.
  • Bake at 350 degrees for 30 minutes or until the cheese has melted and the casserole is hot and bubbly. 
  • Sprinkle with parsley and serve immediately.



Calories: 637kcal | Carbohydrates: 51g | Protein: 32g | Fat: 33g | Saturated Fat: 19g | Cholesterol: 119mg | Sodium: 712mg | Potassium: 438mg | Fiber: 2g | Sugar: 6g | Vitamin A: 1045IU | Vitamin C: 3.5mg | Calcium: 521mg | Iron: 1.9mg