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Cheesy Chicken Spaghetti Bake

Irresistible Cheesy Chicken Spaghetti Bake in 1 Hour

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A comforting and cheesy chicken spaghetti bake with tender noodles, flavorful sauce, and juicy chicken.

  • Total Time: 40 minutes
  • Yield: 6 servings 1x

Ingredients

Scale
  • 12 ounces spaghetti, broken in half
  • 1 ¾ cups milk (preferably not skim; recipe works best with 1%, 2% or whole milk)
  • 1 ½ cups chicken broth or stock
  • ¼ cup + 2 tablespoons all-purpose flour
  • 2 tablespoons salted butter
  • 1 teaspoon onion powder
  • 1 teaspoon garlic powder
  • 1 teaspoon dried basil
  • ½ teaspoon dried oregano
  • ¾ teaspoon table salt
  • ⅛ teaspoon black pepper
  • ⅛ teaspoon dried thyme
  • ¾ cup grated Parmesan cheese, divided
  • 2 ½ cups shredded medium or sharp cheddar cheese, divided
  • 3 cups cooked, chopped chicken
  • Chopped fresh parsley, for garnish, optional

Instructions

  1. Preheat the oven to 375 degrees F. Lightly grease a 9X13-inch baking pan. Set aside.
  2. In a large pot of lightly salted boiling water, cook the spaghetti according to package directions until al dente. Drain and set aside (lift and separate the noodles a few times so they don’t stick as they cool). Don’t wash out the pot; just wipe dry, if needed.
  3. Add the milk, broth, and flour to a blender and process until smooth. Set aside.
  4. Return the pot to medium heat. Melt the butter and add the onion powder, garlic powder, basil, oregano, salt, pepper and thyme. Cook for 30-45 seconds, stirring often until the spices are sizzling and smell fragrant.
  5. Pour the milk mixture into the pot and bring to a simmer, whisking constantly. Continue cooking for 3 to 4 minutes until thickened.
  6. Remove the pot from the heat and add 1/2 cup of the Parmesan cheese and 2 cups of the cheddar cheese to the sauce (reserve the rest of the cheese for topping). Stir until the cheese has melted. Season to taste with additional salt and pepper.
  7. In a large bowl (or back into the pot, if you prefer), add the cooked spaghetti and chicken. Toss and stir until the noodles and chicken are evenly coated with the sauce.
  8. Spread the pasta mixture evenly in the prepared pan. Sprinkle the remaining cheeses over the top.
  9. Bake for 20 to 25 minutes until hot and bubbly. Serve warm.

Notes

  • For best results, use freshly grated cheese instead of pre-shredded.
  • You can substitute rotisserie chicken for convenience.
  • Leftovers can be refrigerated for up to 3 days.
  • Author: Livia Reed
  • Prep Time: 15 minutes
  • Cook Time: 25 minutes
  • Category: Main Dish
  • Method: Baking
  • Cuisine: American
  • Diet: Low Lactose

Nutrition

  • Serving Size: 1/6 of recipe
  • Calories: 520
  • Sugar: 5g
  • Sodium: 780mg
  • Fat: 22g
  • Saturated Fat: 12g
  • Unsaturated Fat: 7g
  • Trans Fat: 0g
  • Carbohydrates: 45g
  • Fiber: 2g
  • Protein: 35g
  • Cholesterol: 110mg