As I organized my pantry one rainy afternoon, I stumbled upon a collection of ingredients that called for a delightful culinary creation: Southern Cheesy Chicken Spaghetti Casserole. This dish has a way of transforming the simplest components into a heartwarming meal that feels like a big, cozy hug. Not only is it an easy recipe perfect for busy weeknights, but it also serves as an inviting centerpiece for family gatherings or potlucks. With tender chicken blended into a creamy, cheesy sauce, all piled on al dente spaghetti, it promises an unforgettable comfort food experience. And the best part? You can customize it to fit your personal taste with various mix-ins or alternate proteins. Ready to dive into this soulful dish? Let’s make some kitchen magic!

Why is this casserole a must-try?
Comforting and creamy, this Southern Cheesy Chicken Spaghetti Casserole is a warm embrace on a plate, ideal for those chilly evenings. Versatile enough to accommodate any dietary needs, you can easily swap ingredients to suit your palate. Crowd-pleasing and perfect for potlucks, it will quickly become a favorite among family and friends. Easy to prepare, you’ll spend less time in the kitchen and more time enjoying the company around you. Want to elevate your meal? Serve it alongside a fresh green salad or some crunchy garlic bread for a complete dining experience!
Southern Cheesy Chicken Spaghetti Casserole Ingredients
• Perfectly curated for your comfort food cravings.
For the Casserole
- Spaghetti – The base of the dish, cook until al dente for the best texture.
- Shredded Chicken – Use rotisserie chicken for convenience, or any leftover chicken you have on hand.
- Cream of Chicken Soup – This rich ingredient adds depth to the sauce.
- Cream of Mushroom Soup – Complements the chicken with earthy tones.
- Sour Cream – Adds a creamy tang that balances the richness.
- Chicken Broth – Helps thin the sauce to the perfect pourable consistency.
- Rotel Diced Tomatoes with Green Chilies – Brings a touch of heat and acidity—drain well to prevent excess moisture.
- Sharp Cheddar Cheese – For that bold flavor, used in the sauce and on top for a golden crust.
- Garlic Powder – Enhances the savory profile of the dish.
- Onion Powder – Adds a sweet depth; perfect for the comforting flavors you love.
- Salt & Black Pepper – Essential to taste; these basic seasonings make all the difference.
For the Topping
- Additional Cheddar Cheese – Sprinkle on top for a bubbly, golden finish that everyone loves.
Step‑by‑Step Instructions for Southern Cheesy Chicken Spaghetti Casserole
Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). This ensures that your Southern Cheesy Chicken Spaghetti Casserole cooks evenly and transforms into a bubbly, golden delight. Preheating is essential, so allow your oven to reach the right temperature while you prepare the other ingredients.
Step 2: Prepare the Baking Dish
Lightly grease a 9x13-inch baking dish with cooking spray or butter. This helps prevent the casserole from sticking and makes for easier serving. Having your baking dish ready prepares you for the final assembly of the casserole, keeping the process smooth and enjoyable.
Step 3: Cook the Spaghetti
In a large pot, bring salted water to a rolling boil. Add the spaghetti and cook until al dente, about 8-10 minutes, stirring occasionally. You want the pasta to be firm but cooked through, as it will continue to soften during baking. Once done, drain the spaghetti thoroughly and set it aside.
Step 4: Make the Sauce Mixture
In a large mixing bowl, combine the cream of chicken soup, cream of mushroom soup, drained Rotel diced tomatoes, sour cream, and chicken broth. Stir these ingredients together until the mixture is smooth and well blended. This creamy sauce will envelop the spaghetti and chicken, creating layers of flavor in your casserole.
Step 5: Add Flavor Enhancements
Now, mix in 1 cup of sharp cheddar cheese along with garlic powder, onion powder, salt, and pepper to the sauce mixture. Combine well to ensure that all the flavors marry together. Taste and adjust the seasonings according to your preference, taking care to create a balance that suits your palate.
Step 6: Incorporate the Chicken
Gently fold in your shredded chicken, ensuring it’s evenly coated with the creamy sauce. Using rotisserie chicken saves time and adds an appealing flavor to your Southern Cheesy Chicken Spaghetti Casserole. Make sure every shredded piece of chicken gets that delicious mixture for maximum flavor.
Step 7: Combine with Spaghetti
Now it’s time to add the cooked spaghetti to the mixture. Toss gently, making sure to coat the pasta evenly with the sauce and chicken. This step is crucial as it integrates all the wonderful flavors, ensuring every bite of your casserole will be rich and comforting.
Step 8: Transfer to Baking Dish
Take the combined pasta, chicken, and sauce mixture and transfer it to the prepared baking dish. Spread it out evenly with a spatula, so it cooks uniformly. This setup is essential to allow the casserole to bubble up beautifully during baking.
Step 9: Add Cheese Topping
Sprinkle the remaining cheddar cheese generously over the top of the casserole. This cheese topping will melt and create a golden, bubbly crust that’s irresistible. The addition of cheese not only enhances the flavor but also contributes to the creamy texture when baked.
Step 10: Bake the Casserole
Place the baking dish in the preheated oven and bake uncovered for 30-35 minutes. Look for bubbles forming around the edges and a golden top as signs that the Southern Cheesy Chicken Spaghetti Casserole is ready. The aroma will fill your kitchen, creating anticipation for this delightful meal.
Step 11: Let Rest Before Serving
Once the casserole is bubbly and golden, remove it from the oven and allow it to rest for about 5 minutes. This resting period helps the casserole set, making it easier to slice and serve. As it cools slightly, those comforting flavors will deepen, making for an even better dining experience.

Make Ahead Options
These Southern Cheesy Chicken Spaghetti Casserole preparations are perfect for busy weeknights! You can assemble the entire casserole up to 24 hours in advance by layering all the ingredients and covering the dish tightly with plastic wrap. This not only saves time but also allows the flavors to meld beautifully overnight. If you need to prep even further ahead, consider freezing the unbaked casserole for up to 3 months—just be sure to wrap it well to prevent freezer burn. When ready to bake, simply thaw the casserole in the refrigerator for about 24 hours, then add an extra 5-10 minutes to the cooking time to ensure it’s heated through. Enjoy the convenience of a hearty meal ready to go!
What to Serve with Southern Cheesy Chicken Spaghetti Casserole?
A comforting casserole deserves a side that beautifully balances its creamy, rich flavors—let's elevate your meal!
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Crisp Green Salad: A fresh salad with mixed greens and a zesty vinaigrette cuts through the richness of the casserole, adding a vibrant crunch.
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Garlic Bread: Warm, buttery garlic bread is the perfect companion, ideal for scooping up cheesy bites and providing a satisfying texture contrast.
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Coleslaw: This tangy, crunchy slaw introduces a refreshing bite that complements the creamy casserole, enhancing the overall dining experience.
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Steamed Veggies: Lightly steamed broccoli or green beans offer a healthy touch while bringing brightness and color to the plate.
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Honey-Glazed Carrots: Their sweetness beautifully pairs with the savory flavors of the casserole, creating a delightful harmony that will please everyone at the table.
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Peach Iced Tea: Serve this cool, refreshing drink to quench your thirst and provide a Southern flair that complements the dish's roots.
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Chocolate Chip Cookies: For a sweet finish, serve warm cookies as a comforting dessert. Their chewy texture provides the perfect contrast to the casserole's creaminess.
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Fruit Salad: A light bowl of seasonal fruits brightens the table and cleanses the palate after a hearty meal, ensuring everyone leaves satisfied.
How to Store and Freeze Southern Cheesy Chicken Spaghetti Casserole
Fridge: Store leftovers in an airtight container for up to 3 days. Ensure the casserole is completely cooled before sealing to maintain its creamy texture.
Freezer: This casserole freezes well for up to 3 months. Wrap tightly in plastic wrap and foil or use a freezer-safe container. Thaw overnight in the fridge before reheating.
Reheating: To reheat, bake in a preheated oven at 350°F (175°C) for 20-25 minutes until heated through. You can also microwave portions for quicker serving.
Make-Ahead: Assemble the Southern Cheesy Chicken Spaghetti Casserole up to 24 hours in advance and refrigerate. Just add an extra 5-10 minutes to the baking time if cooking straight from the fridge.
Southern Cheesy Chicken Spaghetti Casserole Variations
Embrace your creativity in the kitchen with these delightful twists on the classic Southern Cheesy Chicken Spaghetti Casserole!
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Pasta Swap: Substitute angel hair or penne for spaghetti to alter the texture. Each pasta brings its own charm to the dish, making it a fun variation!
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Spicy Kick: Add diced jalapeños for an extra layer of heat. Or switch to pepper jack cheese for a zesty, creamy finish that packs a punch.
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Veggie Boost: Incorporate sautéed bell peppers, onions, or fresh spinach into the mix. Not only will you add color and nutrition, but you'll also enhance the flavors in a delicious way.
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Protein Choices: Use leftover turkey or cooked ground beef as protein alternatives. Transforming the dish with different proteins can refresh this classic, making it feel new every time!
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Cheese Medley: Mix different cheeses like mozzarella or Monterey Jack for a unique flavor profile. The gooey goodness melts beautifully, creating a rich experience in every bite.
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Cream Cheese Addition: Stir in a block of cream cheese for extra creaminess. It adds a rich, velvety texture that elevates the entire casserole.
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Herb Infusion: Sprinkle in some fresh or dried herbs like oregano or thyme. This subtle addition will enhance the overall aromatic experience of your casserole.
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No-Cook Version: For a quick meal, use pre-cooked chicken and no-boil pasta. This saves time in the kitchen without compromising flavor, perfect for those busy weeknights.
These variations will keep your Southern Cheesy Chicken Spaghetti Casserole experience fresh and exciting! Don't forget to serve it up with a crisp green salad or some garlic bread for a well-rounded meal.
Tips for the Best Southern Cheesy Chicken Spaghetti Casserole
- Cook Pasta Right: Aim for al dente spaghetti to prevent mushiness after baking. Overcooked noodles can ruin the casserole's texture.
- Drain Well: Make sure to thoroughly drain your spaghetti; excess moisture can lead to a soupy casserole. Flavors need to shine, and moisture shouldn’t overwhelm them!
- Taste as You Go: Always taste and adjust the seasonings before mixing in the spaghetti. The pasta will absorb flavors, so it's crucial to get it right.
- Cheese Wisdom: Reserve some cheddar cheese for topping to achieve a lovely, golden crust that everyone craves. This detail makes all the difference!
- Give it Time: Allow the casserole to rest before serving. This helps it set, making slicing easier and enhancing the overall texture of your Southern Cheesy Chicken Spaghetti Casserole.

Southern Cheesy Chicken Spaghetti Casserole Recipe FAQs
What type of spaghetti should I use?
I recommend using regular spaghetti for this Southern Cheesy Chicken Spaghetti Casserole, but you can also swap in angel hair or penne if you prefer. Just remember to cook it al dente to achieve the best texture in your casserole.
How long can I store leftovers?
Store any leftover casserole in an airtight container in the refrigerator for up to 3 days. Just make sure it cools completely before sealing, as this helps maintain that creamy texture we all love!
Can I freeze this casserole?
Absolutely! You can freeze the Southern Cheesy Chicken Spaghetti Casserole for up to 3 months. Wrap it tightly in plastic wrap and then in aluminum foil, or place it in a freezer-safe container. When you're ready to enjoy it, thaw overnight in the refrigerator before baking.
What should I do if my casserole is too dry after baking?
If you find your casserole is a bit dry, don't worry! Simply drizzle a little chicken broth or cream over the top and gently mix it through. You can also cover it with foil for the first 15-20 minutes of baking to trap some moisture. Always be sure to adjust your liquid components the next time you make it!
Is this casserole suitable for special diets?
While this Southern Cheesy Chicken Spaghetti Casserole contains dairy and gluten, it can easily be adapted for various dietary needs. For a gluten-free version, substitute gluten-free spaghetti and ensure all your soups are gluten-free. Additionally, you can replace sour cream with a non-dairy alternative, like cashew cream or coconut yogurt, to make it dairy-free. Always check labels if you have food allergies!

Indulgent Southern Cheesy Chicken Spaghetti Casserole Bliss
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C).
- Lightly grease a 9x13-inch baking dish with cooking spray or butter.
- In a large pot, bring salted water to a rolling boil. Add the spaghetti and cook until al dente, about 8-10 minutes. Drain the spaghetti thoroughly and set it aside.
- In a large mixing bowl, combine the cream of chicken soup, cream of mushroom soup, drained Rotel diced tomatoes, sour cream, and chicken broth. Stir until smooth.
- Mix in 1 cup of sharp cheddar cheese along with garlic powder, onion powder, salt, and pepper to the sauce mixture. Combine well.
- Gently fold in your shredded chicken, evenly coating with the creamy sauce.
- Add the cooked spaghetti to the mixture. Toss gently to coat evenly.
- Transfer the mixture to the prepared baking dish and spread it out evenly.
- Sprinkle the remaining cheddar cheese generously over the top of the casserole.
- Bake in the preheated oven for 30-35 minutes until bubbly and golden.
- Allow the casserole to rest for about 5 minutes before serving.





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