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A close-up overhead shot of the creamy baked chicken spaghetti in a casserole dish. Each strand of pasta is coated in a rich, cheesy sauce.

Chicken Spaghetti Bake: The Ultimate Cheesy & Creamy Recipe

The ultimate Chicken Spaghetti Bake! This easy recipe delivers a rich, creamy, and cheesy casserole packed with tender chicken and spaghetti, perfect for a satisfying weeknight dinner the whole family will love.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 8 servings
Course: Dinner, Main Course
Cuisine: American, Southern
Calories: 580
Ingredients Equipment Method Notes

Ingredients
  

Main Ingredients
  • 16 oz spaghetti broken into thirds
  • 3 cups cooked, shredded chicken about 1 rotisserie chicken
  • 1 can (10.5 oz) cream of chicken soup
  • 1 can (10 oz) diced tomatoes with green chilies undrained (like Rotel)
  • 1 cup sour cream
  • 1/2 cup chicken broth
  • 1 small onion finely diced
  • 1 small bell pepper finely diced
  • 4 cups shredded cheese divided (Cheddar and Monterey Jack blend)
  • 1 tsp garlic powder
  • 1/2 tsp onion powder
  • Salt and black pepper to taste

Equipment

  • 1 9x13 inch Baking Dish
  • 1 Large stockpot
  • 1 Large Mixing Bowl

Method
 

Instructions
  1. Preheat oven to 350°F (175°C). Grease a 9x13 inch baking dish. Cook spaghetti according to package directions until al dente. Drain and set aside.
  2. In a small skillet, sauté the diced onion and bell pepper in a tablespoon of oil over medium heat until softened, about 5 minutes.
  3. In a large bowl, whisk together the cream of chicken soup, undrained diced tomatoes with green chilies, sour cream, chicken broth, garlic powder, onion powder, salt, and pepper until smooth.
  4. Add the cooked spaghetti, shredded chicken, sautéed vegetables, and 2 cups of the shredded cheese to the sauce. Stir until everything is well-coated.
  5. Pour the mixture into the prepared baking dish. Top with the remaining 2 cups of cheese. Bake for 25-30 minutes, or until bubbly and the top is golden brown.
  6. Let the Chicken Spaghetti Bake rest for 5-10 minutes before serving. This allows it to set up and makes serving easier.

Notes

For the best flavor and texture, shred your own cheese from a block. Pre-shredded cheese has anti-caking agents that can make the sauce gritty.
A store-bought rotisserie chicken is a great time-saver for this recipe.
Don't overcook the pasta initially, as it will continue to cook in the oven.