There’s something about a warm, bubbling Chicken Spaghetti Casserole that brings back memories of cozy evenings spent in Mama Lou’s kitchen. The aroma of roasted chicken and creamy sauce mingling with pasta is enough to transport me back to those cherished moments. Mama Lou, with her knack for turning simple ingredients into a symphony of flavors, taught me that food is more than sustenance; it’s a bridge to our past and a way to share love with those around us. Today, I want to share with you not just a recipe, but a piece of my heart, wrapped in the comfort of a dish that has been a family favorite for generations.
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Why You’ll Love This Chicken Spaghetti Casserole
Chicken Spaghetti Casserole is a dish that effortlessly marries convenience with flavor, making it a staple in my home. It’s a recipe that Ouma, my sister, and I perfected together on lazy Sunday afternoons. The beauty of this casserole lies in its simplicity and versatility. You’ll love the creamy, cheesy sauce that envelopes tender strands of spaghetti and succulent pieces of chicken. It’s a dish that’s perfect for feeding a crowd or meal prepping for the week. And unlike many casseroles, this one doesn’t rely on condensed soups, so you can be assured of its wholesome goodness.
Ingredients You’ll Need for This Chicken Spaghetti Casserole

- 12 ounces spaghetti
- 2 tablespoons olive oil
- 1 pound boneless, skinless chicken breasts, cubed
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1 bell pepper, diced
- 1 cup mushrooms, sliced
- 1 can (14.5 ounces) diced tomatoes, drained
- 1 cup chicken broth
- 1 cup heavy cream
- 2 cups shredded cheddar cheese
- 1/2 cup grated Parmesan cheese
- 1 tablespoon fresh parsley, chopped
Feel free to substitute the chicken with turkey or even tofu for a vegetarian twist. If you’re out of cheddar, mozzarella or Monterey Jack can add a delightful creaminess.
Nutrition Facts
- Calories: 450 per serving
- Protein: 28g
- Fat: 20g
- Carbohydrates: 40g
- Fiber: 3g
- Sugar: 4g
- Sodium: 650mg

Ultimate Comfort: Irresistible Chicken Spaghetti Casserole Recipe
Learn how to make delicious Chicken Spaghetti Casserole. Easy recipe with step-by-step instructions.
- Total Time: 45 minutes
- Yield: 4 servings 1x
Ingredients
- 12 ounces spaghetti
- 2 tablespoons olive oil
- 1 pound boneless, skinless chicken breasts, cubed
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1 bell pepper, diced
- 1 cup mushrooms, sliced
- 1 can (14.5 ounces) diced tomatoes, drained
- 1 cup chicken broth
- 1 cup heavy cream
- 2 cups shredded cheddar cheese
- 1/2 cup grated Parmesan cheese
- 1 tablespoon fresh parsley, chopped
Feel free to substitute the chicken with turkey or even tofu for a vegetarian twist. If you’re out of cheddar, mozzarella or Monterey Jack can add a delightful creaminess.
Instructions
- Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish and set aside.
- Cook the spaghetti according to package instructions until al dente. Drain and set aside.
- In a large skillet over medium heat, heat the olive oil. Add the chicken, salt, pepper, garlic powder, and onion powder. Cook until the chicken is browned and cooked through, about 5-7 minutes.
- Add the bell pepper and mushrooms to the skillet and sauté until softened, about 5 minutes.
- Stir in the diced tomatoes, chicken broth, and heavy cream. Bring to a simmer and cook for 5 minutes, allowing the flavors to meld.
- Remove from heat and stir in the cooked spaghetti, 1 cup of cheddar cheese, and all of the Parmesan cheese. Mix until well combined.
- Transfer the mixture to the prepared baking dish. Top with the remaining cheddar cheese.
- Bake in the preheated oven for 20-25 minutes, or until the cheese is melted and bubbly.
- Garnish with fresh parsley before serving.
A tip from Mama Lou: Always let the casserole sit for a few minutes after baking. This helps the flavors settle and makes serving easier.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Main Dish
- Method: Cooking
- Cuisine: International
Steps to Create Your Chicken Spaghetti Casserole
- Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish and set aside.
- Cook the spaghetti according to package instructions until al dente. Drain and set aside.
- In a large skillet over medium heat, heat the olive oil. Add the chicken, salt, pepper, garlic powder, and onion powder. Cook until the chicken is browned and cooked through, about 5-7 minutes.
- Add the bell pepper and mushrooms to the skillet and sauté until softened, about 5 minutes.
- Stir in the diced tomatoes, chicken broth, and heavy cream. Bring to a simmer and cook for 5 minutes, allowing the flavors to meld.
- Remove from heat and stir in the cooked spaghetti, 1 cup of cheddar cheese, and all of the Parmesan cheese. Mix until well combined.
- Transfer the mixture to the prepared baking dish. Top with the remaining cheddar cheese.
- Bake in the preheated oven for 20-25 minutes, or until the cheese is melted and bubbly.
- Garnish with fresh parsley before serving.
A tip from Mama Lou: Always let the casserole sit for a few minutes after baking. This helps the flavors settle and makes serving easier.
Tips for Making the Best Chicken Spaghetti Casserole
For a richer flavor, try roasting the chicken with a bit of paprika and thyme before adding it to the casserole. If you’re short on time, a rotisserie chicken can be a lifesaver, providing both flavor and convenience. Ouma likes to add a sprinkle of red pepper flakes for a bit of heat, which complements the creamy cheese beautifully.
Serving Suggestions and Pairings

This Chicken Spaghetti Casserole pairs wonderfully with a simple green salad or some garlic bread to soak up all the creamy sauce. A glass of chilled white wine, like a Sauvignon Blanc, complements the dish’s richness and enhances its flavors.
Storage and Reheating Tips
Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, simply cover and bake at 350°F until heated through, or microwave individual servings for a quick meal. For longer storage, consider freezing portions; just ensure they are well wrapped to prevent freezer burn.
Frequently Asked Questions
What are the main ingredients for Chicken Spaghetti Casserole?
The main ingredients for Chicken Spaghetti Casserole include the items listed in our ingredients section above. Each ingredient plays a crucial role in achieving the perfect flavor and texture.
How long does it take to make Chicken Spaghetti Casserole?
The total time to make Chicken Spaghetti Casserole includes both preparation and cooking time. Check the recipe card above for exact timing details.
Can I make Chicken Spaghetti Casserole ahead of time?
Yes, Chicken Spaghetti Casserole can often be prepared in advance. Store it properly in an airtight container in the refrigerator and consume within the recommended timeframe.
What can I serve with Chicken Spaghetti Casserole?
Chicken Spaghetti Casserole pairs well with various sides and accompaniments. Consider the serving suggestions mentioned in the recipe for the best dining experience.
Is Chicken Spaghetti Casserole suitable for special diets?
Depending on the ingredients used, Chicken Spaghetti Casserole may be adapted for various dietary needs. Check the ingredients list and consider substitutions as needed for your dietary requirements.
Final Thoughts
Chicken Spaghetti Casserole is more than a dish; it’s a way to connect with family and create new memories. Each bite is a reminder of the love and tradition passed down from Mama Lou, who always believed that the best meals are those shared with loved ones. I hope this recipe brings warmth and joy to your table, just as it has to mine.