I still remember the first time I made chicken spaghetti. I was a college student trying to impress my roommates with a home-cooked meal, but I had no idea where to start. I wanted something easy, comforting, and filling—without the stress of complex techniques. That’s when I stumbled upon this creamy, cheesy chicken spaghetti recipe, and it quickly became my go-to dish for cozy dinners.
This recipe is perfect for beginner cooks because it doesn’t require fancy skills or hard-to-find ingredients. The creamy cheese sauce, tender chicken, and perfectly cooked spaghetti create a satisfying meal that feels gourmet but is incredibly simple to prepare. Plus, it’s a great way to use up leftover chicken, making it both practical and budget-friendly.

Why This Recipe is Special
- Beginner-Friendly: No complicated steps or advanced cooking techniques.
- Quick and Efficient: Ready in about 30-40 minutes, making it great for busy weeknights.
- Comfort Food Classic: The combination of creamy cheese sauce, tender chicken, and spaghetti is pure comfort.
- Customizable: Easily adaptable with different types of pasta, cheeses, or add-ins like veggies or bacon.
- No Canned Soup: Unlike many creamy casseroles, this homemade sauce is made from scratch, giving it a fresh, rich taste.
Ingredients and Their Roles
Essential Ingredients:
- Chicken: The main protein source, adding heartiness to the dish. Use fresh, cooked, or rotisserie chicken for convenience.
- Spaghetti: The base of the dish, soaking up all the creamy goodness. Thin spaghetti works best, but other types can be used.
- Butter: Adds richness and helps create the roux (a thickening base for the sauce).
- Onions and Garlic: Provide a depth of flavor and an aromatic base for the sauce.
- Flour: Helps thicken the sauce, ensuring a velvety consistency.
- Chicken Broth and Milk: Combine to create a smooth, flavorful sauce.
- Cream Cheese, Cheddar, and Mozzarella: The ultimate trio for a creamy, gooey texture.
- Rotel Tomatoes (Diced Tomatoes & Green Chilies): Adds a pop of color, acidity, and mild heat to balance the richness.
- Italian Seasoning, Salt, and Pepper: Essential for seasoning the dish to perfection.
Substitutions and Alternatives:
- Pasta: Swap spaghetti for penne, fettuccine, or even gluten-free pasta.
- Cheese: Use Monterey Jack, Colby, or Parmesan for different flavor profiles.
- Protein: Try shredded turkey, ground beef, or even shrimp for variation.
- Veggies: Add bell peppers, mushrooms, or spinach for extra nutrition.
Step-by-Step Instructions
Step 1: Prepare the Chicken
If using fresh chicken, season lightly with salt, pepper, and Italian seasoning. Sear in olive oil over medium-high heat for about 5-6 minutes per side until golden brown and cooked through. Remove, let it cool, and dice into bite-sized pieces. You can also use rotisserie or pre-cooked chicken to save time.
Step 2: Make the Creamy Sauce
In the same pan, melt butter and sauté onions until softened. Add garlic and cook for an additional minute. Sprinkle in the flour and stir continuously for about 2 minutes to eliminate the raw flour taste.
Step 3: Build the Base
Gradually add chicken broth in small splashes, stirring constantly to prevent lumps. Do the same with the milk, whisking until smooth. Let the sauce simmer for a few minutes until it thickens slightly.
Step 4: Cook the Pasta
While the sauce simmers, bring a pot of salted water to a boil and cook the spaghetti according to package instructions. Drain and set aside.
Step 5: Incorporate the Cheeses
Reduce heat to low and add softened cream cheese, stirring until fully melted. Sprinkle in shredded cheddar cheese and mix until smooth. Be sure to add the cheese gradually and not over high heat, or it may turn grainy.
Step 6: Add the Final Ingredients
Drain the juice from the Rotel tomatoes (unless you prefer a thinner sauce) and stir them into the mixture. Add the cooked chicken and mix everything well.
Step 7: Combine with Pasta
Gently fold the cooked spaghetti into the sauce, ensuring every strand is coated. If your pan isn’t oven-safe, transfer the mixture to a greased 9×13 baking dish.
Step 8: Bake to Perfection
Top the dish with shredded mozzarella and bake at 400°F for 15 minutes. For a golden, crispy top, broil at 475°F for 1-2 minutes, keeping a close eye to prevent burning.
Step 9: Serve and Enjoy
Remove from the oven and sprinkle with red pepper flakes and fresh parsley. Serve hot with garlic bread or a side salad.
Beginner Tips and Notes
- Avoid Overcooking the Chicken: If using fresh chicken, sear it just until done, as it will continue cooking in the sauce.
- Prevent a Grainy Sauce: Never add cheddar cheese when the sauce is too hot; let it cool slightly first.
- Make It Ahead: Assemble everything in a casserole dish, cover, and refrigerate for up to 2 days before baking.
- Shred Your Own Cheese: Pre-shredded cheese contains anti-caking agents that prevent smooth melting. For the best texture, shred from a block.
- Adjust Sauce Thickness: If the sauce is too thick, add a splash of milk or reserved pasta water. If it’s too thin, let it simmer a little longer.
Serving Suggestions
This dish is rich and hearty, so pairing it with something fresh or crunchy balances it beautifully. Try serving with:
- Garlic Bread with Cheese: The perfect way to scoop up the extra sauce.
- Crisp Green Salad: A simple salad with balsamic vinaigrette cuts through the creaminess.
- Steamed or Roasted Veggies: Broccoli, green beans, or zucchini make great side dishes.
Storage and Reheating
- Refrigeration: Store leftovers in an airtight container for up to 3 days.
- Freezing: Freeze in a tightly sealed container for up to 3 months. Note that the sauce’s texture may change slightly when reheated.
- Reheating: Warm in the microwave in 30-second intervals or bake at 350°F until heated through. Add a splash of milk if the sauce is too thick.
Conclusion: Try It and Share Your Experience
Cooking doesn’t have to be intimidating, and this creamy chicken spaghetti is proof of that. Whether you’re making it for your family, a potluck, or just for yourself, this dish is guaranteed to be a comforting and delicious success.
Have you tried this recipe? Let me know in the comments how it turned out, or share your own twist on it. I’d love to hear from you. Happy cooking!
FAQ About Creamy Chicken Spaghetti
Can I make this recipe ahead of time?
Yes! You can prepare the dish up to two days in advance. Assemble it in a baking dish, cover, and refrigerate. When ready to serve, bake at 350°F for 20 minutes, then uncover and bake for another 10-15 minutes.
What can I substitute for Rotel tomatoes?
If you don’t have Rotel, you can use regular diced tomatoes and add a pinch of chili flakes or diced green chilies to achieve a similar flavor.
How do I keep the cheese sauce from becoming grainy?
To prevent a grainy texture, let the sauce cool slightly before adding cheddar cheese. High heat can cause the cheese to separate, so reduce the temperature and stir gently.
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Chicken Spaghetti
- Total Time: 50 minutes
- Yield: 4–6 servings 1x
Description
This creamy chicken spaghetti is a comforting, cheesy, and flavorful dish perfect for weeknight dinners. Made without canned soup, it features a rich homemade cheese sauce, juicy chicken, and tender pasta, making it a family favorite that’s easy to prepare.
Ingredients
For the Chicken:
- 2 small boneless, skinless chicken breasts
- 2 teaspoons Italian seasoning
- Salt and pepper, to taste
- 2 tablespoons olive oil
For the Sauce:
- 4 tablespoons butter
- 1 small yellow onion, diced
- 3 cloves garlic, minced
- 4 tablespoons flour
- 1 ½ cups chicken broth
- ¾ cup milk
- 4 ounces cream cheese, softened
- 1 cup shredded cheddar cheese
- 10 ounces diced tomatoes & green chilies (Rotel), drained
For the Pasta:
- 8 ounces thin spaghetti
For Topping:
- 1 cup shredded mozzarella cheese
- Red pepper flakes and chopped fresh parsley (optional)
Instructions
- Prepare the Chicken: If using fresh chicken, season both sides with Italian seasoning, salt, and pepper. Heat olive oil in a large pan over medium-high heat. Sear the chicken for 5-6 minutes on each side until golden brown and cooked through. Remove from the pan and let it rest before dicing into bite-sized pieces.
- Make the Sauce: Reduce heat to medium-low and melt the butter in the same pan. Stir in the diced onions and cook until softened, about 3-4 minutes. Add minced garlic and cook for another minute until fragrant. Sprinkle the flour evenly over the onions and stir constantly for about 2 minutes to remove the raw flour taste.
- Thicken the Base: Slowly pour in the chicken broth, stirring continuously to prevent lumps. Follow with the milk, adding it in small increments while whisking to ensure a smooth mixture. Let the sauce simmer for a few minutes to thicken slightly.
- Cook the Pasta: While the sauce is simmering, bring a large pot of salted water to a boil. Cook the spaghetti according to package instructions until al dente. Drain and set aside.
- Melt the Cheese: Reduce the heat to low and add softened cream cheese to the sauce. Stir until completely melted and smooth. Let the sauce cool slightly before sprinkling in the shredded cheddar cheese. Stir gently until fully incorporated, ensuring the cheese doesn’t separate.
- Combine Everything: Stir in the drained Rotel tomatoes and cooked chicken, mixing well to distribute evenly. Add the cooked spaghetti and toss gently until fully coated in the creamy sauce. If not using an oven-safe skillet, transfer the mixture to a greased 9×13 baking dish.
- Bake to Perfection: Preheat the oven to 400°F. Top the dish with shredded mozzarella cheese and bake uncovered for 15 minutes. If a golden crust is desired, broil at 475°F for 1-2 minutes, watching closely to prevent burning.
- Serve and Enjoy: Remove from the oven and let it rest for a few minutes. Garnish with red pepper flakes and fresh parsley if desired. Serve warm with garlic bread or a side salad.
Notes
- For a shortcut, use rotisserie chicken instead of cooking fresh chicken.
- If the sauce thickens too much, add a splash of milk or reserved pasta water to loosen it.
- For a spicier version, add extra chili flakes or diced jalapeños.
- Make it ahead: Assemble and refrigerate for up to 2 days before baking.
- Storage: Leftovers keep well in an airtight container in the fridge for up to 3 days or can be frozen for up to 3 months.
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Category: Main Course
- Method: Baking, Stovetop
- Cuisine: American
Nutrition
- Serving Size: 1 portion (out of 6)
- Calories: 547 kcal
- Sugar: 5g
- Sodium: 641mg
- Fat: 32g
- Saturated Fat: 16g
- Unsaturated Fat: 14g
- Trans Fat: 1g
- Carbohydrates: 40g
- Fiber: 2g
- Protein: 25g
- Cholesterol: 103mg