If you’re looking for a hearty, crowd-pleasing dinner that comes together with simple ingredients, this baked chicken spaghetti is exactly what you need.
It’s a classic Southern comfort dish that layers tender spaghetti, juicy shredded chicken, a creamy cheesy sauce, and a golden bubbling top straight out of the oven.
It’s the kind of casserole that feeds a whole family, holds up great as leftovers, and genuinely gets requested again and again.
If you’ve never made it before, get ready to add this to your permanent dinner rotation. For another comforting baked chicken dinner, you might also love this Oven Baked BBQ Chicken.
| Quick Recipe Summary | |
|---|---|
| Prep Time | 20 minutes |
| Cook Time | 35 minutes |
| Total Time | 55 minutes |
| Servings | 8 servings |
| Difficulty Level | Easy |
Why You’ll Love This Baked Chicken Spaghetti
This dish is the definition of fuss-free comfort food. You only need one large baking dish and a pot for the pasta, which means less cleanup and more time at the dinner table.
The creamy sauce is rich and savory without requiring any fancy ingredients. Everything comes from pantry staples you probably already have on hand.
It’s incredibly filling, so it works beautifully for weeknight dinners and potlucks alike. One pan easily serves 8 people, which makes it one of the best bang-for-your-buck meals out there.
You can also make it completely ahead of time and refrigerate it unbaked. This means dinner is already done by the time you’re home from a long day.
The cheesy topping turns golden and slightly crispy in the oven, giving you that irresistible contrast of creamy filling and bubbly crust. It’s one of those recipes where every bite is pure satisfaction.
- Feeds a crowd from one single baking dish
- Uses simple, budget-friendly ingredients
- Fully customizable with your favorite add-ins
- Make-ahead friendly for busy weeknights
- Leftovers reheat beautifully the next day
- Loved by kids and adults equally
Ingredients
This recipe uses everyday ingredients that are easy to find at any grocery store.
The combination of cream of mushroom soup, cream of chicken soup, and Rotel tomatoes is the classic Southern base that makes this casserole so distinct and flavorful.
- 12 oz spaghetti, broken in half
- 3 cups cooked, shredded chicken (about 2 large chicken breasts or a rotisserie chicken)
- 1 can (10.5 oz) cream of mushroom soup
- 1 can (10.5 oz) cream of chicken soup
- 1 can (10 oz) Rotel diced tomatoes and green chiles, undrained
- 1 cup sour cream
- 1/2 cup chicken broth
- 1 teaspoon garlic powder
- 1/2 teaspoon onion powder
- 1/2 teaspoon black pepper
- 1/2 teaspoon salt
- 1 small onion, finely diced
- 1 green bell pepper, finely diced
- 2 tablespoons butter
- 2 cups shredded sharp cheddar cheese, divided
- 1 cup shredded Monterey Jack cheese
Read Also: Million Dollar Chicken Casserole
Kitchen Equipment Needed
You’ll need a large enough baking dish to hold all the pasta and filling together. A 9×13-inch baking dish is the standard size used in virtually every version of this recipe.
- 9×13-inch baking dish
- Large pot for boiling pasta
- Large skillet or sauté pan
- Wooden spoon or silicone spatula
- Colander for draining pasta
- Cutting board and chef’s knife
- Measuring cups and spoons
- Aluminum foil
- Box grater (for shredding fresh cheese)
Recommended Products for This Recipe
These are products I personally recommend based on experience making this recipe. They can genuinely make a difference in the final result.
1. HiCoup 9×13 Ceramic Baking Dish
A quality ceramic baking dish conducts heat evenly, which means the edges of your baked chicken spaghetti won’t dry out before the center is cooked through.
The non-porous surface also makes it incredibly easy to clean after all that cheesy goodness. It’s a piece of equipment that will serve you for years.
2. Rotel Original Diced Tomatoes and Green Chiles
Rotel is genuinely irreplaceable in this recipe. The combination of diced tomatoes and green chiles adds just the right amount of tang and mild heat that makes the sauce taste layered and complex without any extra work on your end.
3. Tillamook Sharp Cheddar Cheese Block
Pre-shredded cheese contains anti-caking agents that prevent it from melting as smoothly.
Buying a block of sharp cheddar and grating it yourself gives you a silkier, creamier melt throughout the casserole.
Tillamook is a consistently high-quality brand with a bold sharp flavor that stands up beautifully in baked dishes.
4. OXO Good Grips Large Colander
A sturdy, wide-base colander makes draining a full pot of spaghetti much safer and easier.
The OXO version has deep handles that stay cool and a stable base so it won’t tip when you’re pouring. It’s one of those small upgrades that makes kitchen life noticeably better.
You might also enjoy: Chicken Broccoli Casserole
Step-by-Step Instructions: How to Make Baked Chicken Spaghetti
1. Preheat the Oven and Prepare Your Baking Dish
- Preheat your oven to 350°F (175°C). This temperature is ideal for allowing the casserole to heat through completely and for the cheese on top to melt and bubble without burning.
- While the oven preheats, lightly grease your 9×13-inch baking dish with cooking spray or a thin layer of butter. Make sure to cover the bottom and sides so the spaghetti doesn’t stick during baking.
- Set the greased dish aside on your counter and move to your other prep work.
2. Cook the Spaghetti
- Fill a large pot with water and bring it to a full rolling boil over high heat. Add a generous pinch of salt to the water, about 1 to 2 teaspoons. Salting the pasta water adds flavor directly into the spaghetti.
- Break the 12 oz of spaghetti in half before adding it to the pot. This step is important because shorter pasta is much easier to mix into the casserole and scoop when serving.
- Cook the spaghetti according to package directions, but stop 2 minutes early. You want it slightly underdone (al dente) since it will continue cooking in the oven. Overcooked spaghetti at this stage will turn mushy after baking.
- Drain the spaghetti through your colander and set it aside. Do not rinse the pasta with water. The surface starch on the noodles helps the creamy sauce cling to them better.
3. Sauté the Vegetables
- Place a large skillet over medium heat and add 2 tablespoons of butter. Let the butter melt fully before adding the vegetables.
- Add the finely diced onion and green bell pepper to the skillet. Cook them, stirring occasionally, for about 5 to 6 minutes until the onion is translucent and slightly soft and the bell pepper has softened. This step is important because raw onion and pepper in a casserole can have an unpleasant sharp texture, so sautéing them first develops their sweetness and removes that raw bite.
- Remove the skillet from heat once the vegetables are tender and set aside.
4. Make the Creamy Sauce
- In a large mixing bowl, combine the cream of mushroom soup, cream of chicken soup, and the full undrained can of Rotel diced tomatoes and green chiles. Stir them together until the soups are combined with the tomatoes.
- Add the sour cream and chicken broth to the bowl and stir everything together until a smooth, creamy sauce forms. The chicken broth thins the mixture slightly so it coats the pasta evenly.
- Add garlic powder, onion powder, black pepper, and salt. Stir to evenly distribute the seasonings throughout the sauce.
- Add the sautéed onion and green bell pepper to the sauce and stir them in.
5. Combine the Spaghetti, Chicken, and Sauce
- Add the drained cooked spaghetti to the large bowl with the sauce. Use your spatula or wooden spoon to toss everything together until every strand of spaghetti is coated in the sauce.
- Add the 3 cups of shredded cooked chicken to the bowl. Fold it gently into the pasta and sauce mixture so the chicken is evenly distributed throughout. Make sure there are no large clumps of chicken gathered in one spot.
- Add 1 cup of the shredded sharp cheddar cheese and the full cup of shredded Monterey Jack cheese to the bowl. Stir them in so the cheese is mixed throughout the casserole rather than just sitting on top.
- This is the filling that will go into your baking dish. Taste the mixture now and adjust salt and pepper if needed before baking.
6. Transfer to the Baking Dish and Add the Topping
- Pour the entire spaghetti and chicken mixture into your prepared 9×13-inch baking dish. Use the back of your spoon or spatula to spread it evenly across the pan so it bakes uniformly.
- Press down slightly to compact the filling so it holds together nicely when served.
- Sprinkle the remaining 1 cup of shredded sharp cheddar cheese evenly across the entire top surface of the casserole. This layer of cheese will melt into the golden bubbly crust that makes this dish so visually appealing and delicious.
7. Bake the Casserole
- Cover the baking dish tightly with aluminum foil. Covering it during the first part of baking traps the steam inside, which keeps the pasta from drying out and allows the entire casserole to heat through evenly.
- Place the covered dish in your preheated 350°F oven and bake for 25 minutes.
- After 25 minutes, remove the foil carefully (watch for escaping steam). Return the uncovered dish to the oven for an additional 10 minutes, or until the cheese on top is fully melted, bubbly, and slightly golden at the edges.
- Remove the casserole from the oven and let it rest for 5 to 10 minutes before serving. This resting time allows the casserole to set slightly so it scoops cleanly rather than falling apart.
This recipe pairs wonderfully with this Creamy Mashed Potatoes on the side for a truly hearty dinner.
Tips for The Best Baked Chicken Spaghetti
Getting the perfect casserole comes down to a few small details that make a big difference.
The most impactful one is undercooking your pasta before baking, which prevents the final dish from turning mushy.
- Use rotisserie chicken for the easiest and most flavorful shredded chicken. The skin and seasonings from a rotisserie chicken add extra depth to the final dish.
- Grate your own cheese from a block rather than buying pre-shredded. Fresh-grated cheese melts much more smoothly and creates a creamier texture throughout the casserole.
- Do not overcook the spaghetti. Stop it 2 minutes before the package directions say it is done. It will finish cooking in the oven.
- Don’t drain the Rotel. The liquid from the can adds flavor and helps keep the sauce from being too thick.
- Taste the sauce before baking and adjust your seasoning. This is your best opportunity to add more salt, pepper, or garlic powder before everything bakes together.
- Use full-fat sour cream for the richest, creamiest result. Low-fat versions can make the sauce slightly watery.
- Let it rest after baking. Give the casserole at least 5 to 10 minutes out of the oven before serving so it holds together when you scoop it.
Read Also: Ritz Cracker Chicken Casserole
Serving Suggestions
Baked chicken spaghetti is rich and filling on its own, so you want simple sides that complement it without competing.
Crisp green vegetables and light salads work especially well to balance the creaminess of the casserole.
A simple side salad like this Caesar Pasta Salad makes a fresh counterpoint to the richness of the casserole.
- A classic green salad with vinaigrette
- Warm garlic bread or dinner rolls to scoop up the extra sauce
- Sautéed Cabbage as a light and flavorful vegetable side
- Sweet Cornbread for a classic Southern pairing
- Steamed broccoli or roasted green beans
- Vinegar Coleslaw for a bright, tangy contrast
Variations of Baked Chicken Spaghetti
One of the best things about this casserole is how endlessly adaptable it is.
The base recipe is just a starting point, and you can swap ingredients in and out to suit your preferences, dietary needs, or whatever you have in the pantry.
- Spicy version: Use hot Rotel instead of original, and add 1/2 teaspoon cayenne pepper or a handful of diced jalapeños to the sauce.
- Extra cheesy: Add cream cheese (4 oz, softened) to the sauce mixture for an even richer, more decadent result.
- Tex-Mex twist: Add a can of black beans, a cup of frozen corn, and swap cheddar for pepper jack cheese.
- Mushroom lover’s version: Sauté 8 oz of sliced mushrooms along with the onion and pepper for extra depth.
- Turkey version: Substitute shredded turkey for the chicken, which is perfect for using up Thanksgiving leftovers.
- Lighter version: Use reduced-sodium soups and Greek yogurt instead of sour cream to reduce calories without sacrificing creaminess.
- Gluten-free: Swap the regular spaghetti for your favorite gluten-free pasta variety and use gluten-free condensed soups.
Storage and Reheating
Baked chicken spaghetti keeps wonderfully, making it ideal for meal prep or next-day lunches.
Store it properly and it will taste just as good on day two or three.
- Refrigerator: Let the casserole cool completely, then cover tightly with plastic wrap or store in an airtight container. It will keep in the fridge for up to 4 days.
- Freezer: You can freeze the unbaked casserole (assembled but not yet cooked) for up to 3 months. Wrap it tightly in plastic wrap, then a layer of foil. Thaw overnight in the refrigerator before baking as directed.
- Freezing after baking: Baked leftovers can also be frozen in individual portions for up to 2 months.
- Reheating from refrigerator: Cover with foil and reheat in a 350°F oven for 20 to 25 minutes until heated through, or microwave individual portions on medium power for 2 to 3 minutes, stirring once halfway.
- Reheating from frozen (unbaked): Remove from freezer the night before, thaw in the fridge, then bake as directed adding 10 extra minutes covered.
Nutritional Facts
The following values are estimates per serving based on the recipe as written, serving 8 people.
| Nutrient | Amount Per Serving | ||| | Calories | 520 | | Total Fat | 24g | | Saturated Fat | 12g | | Cholesterol | 95mg | | Sodium | 890mg | | Total Carbohydrates | 42g | | Dietary Fiber | 2g | | Sugars | 4g | | Protein | 34g |
Nutritional values are approximate and will vary based on specific brands and ingredient choices used.
You might also enjoy: Chicken Pasta Salad
Health Benefits of Key Ingredients
While this is definitely a comfort food casserole, several of its core ingredients do come with real nutritional advantages worth noting.
The combination of protein, vegetables, and dairy makes it more balanced than you might expect.
Chicken is one of the best lean protein sources available, and the generous amount in this recipe means each serving provides over 30 grams of protein.
Protein supports muscle repair, keeps you full longer, and contributes to overall energy levels throughout the day.
- Chicken breast is high in lean protein, low in saturated fat, and a good source of B vitamins including niacin and B6, which support energy metabolism.
- Bell peppers are rich in vitamin C and antioxidants. A single green bell pepper contains more vitamin C than an orange.
- Onion contains quercetin, a powerful flavonoid with anti-inflammatory properties, and supports immune health.
- Tomatoes (from Rotel) provide lycopene, an antioxidant associated with reduced risk of certain chronic diseases.
- Cheddar cheese delivers calcium for strong bones and teeth, as well as vitamin K2, which helps the body use calcium effectively.
- Sour cream provides probiotics and fat-soluble vitamins including vitamin A and vitamin D when consumed as part of a balanced diet.
FAQs About Baked Chicken Spaghetti
1. Can I make baked chicken spaghetti ahead of time?
Yes, this is one of the best features of this recipe. You can assemble the entire casserole up to 24 hours in advance, cover it tightly, and refrigerate it unbaked.
When you’re ready to serve, simply bake it as directed, adding about 10 to 15 extra minutes of covered baking time since it will be going into the oven cold.
2. Can I use a different type of pasta?
Absolutely. While spaghetti is the traditional choice that gives this dish its name, it works just as well with other pasta shapes like penne, rotini, rigatoni, or egg noodles.
The key is to slightly undercook whatever pasta you choose since it will finish cooking in the oven.
3. What can I use instead of Rotel if I can’t find it?
If Rotel isn’t available in your area, you can substitute one 14.5 oz can of regular diced tomatoes combined with one small 4 oz can of diced green chiles.
You can also use a 14.5 oz can of petite diced tomatoes with a pinch of red pepper flakes for a similar flavor profile.
4. How do I keep the casserole from drying out?
The key is covering the dish with foil for the first 25 minutes of baking and only uncovering it for the last 10 minutes to brown the cheese.
Also, make sure your spaghetti isn’t overcooked before baking. If you’re reheating leftovers, always cover with foil and add a small splash of chicken broth to the dish before reheating.
5. Can I use canned chicken instead of fresh or rotisserie chicken?
Yes, canned chicken works in a pinch and makes this recipe even faster to put together.
Drain it thoroughly before adding it to the sauce. For the best texture and flavor, though, rotisserie chicken or freshly baked and shredded chicken breasts will always give you a better result than canned.
Baked Chicken Spaghetti
Ingredients
- 12 oz spaghetti 340g; broken in half before cooking
- 3 cups cooked shredded chicken about 2 large chicken breasts or 1 rotisserie chicken; approximately 420g
- 1 can (10.5 oz) cream of mushroom soup 298g; condensed, undiluted
- 1 can (10.5 oz) cream of chicken soup 298g; condensed, undiluted
- 1 can (10 oz) Rotel diced tomatoes and green chiles 283g; do not drain
- 1 cup sour cream 240ml; full-fat recommended
- 1/2 cup chicken broth 120ml
- 1 tsp garlic powder
- 1/2 tsp onion powder
- 1/2 tsp black pepper
- 1/2 tsp salt plus more for pasta water
- 1 small onion finely diced; about 3/4 cup or 100g
- 1 green bell pepper finely diced; about 3/4 cup or 100g
- 2 tbsp butter 28g; for sautéing vegetables
- 2 cups shredded sharp cheddar cheese 226g; divided — 1 cup mixed into casserole, 1 cup sprinkled on top
- 1 cup shredded Monterey Jack cheese 113g; mixed into the casserole filling
Equipment
- 9×13-inch baking dish Ceramic or glass preferred for even heat distribution
- Large pot For boiling spaghetti
- Large skillet or sauté pan For sautéing vegetables
- Colander For draining cooked pasta
- Large mixing bowl For combining sauce, pasta, and chicken
- Wooden spoon or silicone spatula For mixing and folding ingredients
- Cutting board and chef’s knife For dicing onion and bell pepper
- Measuring cups and spoons
- Aluminum foil For covering the dish during the first 25 minutes of baking
- Box grater For shredding fresh cheese from a block; optional if using pre-shredded
Method
- Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with cooking spray or butter and set aside.
- Break the spaghetti in half and cook in a large pot of salted boiling water until just al dente, about 2 minutes less than the package directions. Drain (do not rinse) and set aside.
- Melt the butter in a large skillet over medium heat, then add the diced onion and green bell pepper. Cook for 5 to 6 minutes, stirring occasionally, until softened and the onion is translucent.
- In a large mixing bowl, stir together the cream of mushroom soup, cream of chicken soup, undrained Rotel, sour cream, chicken broth, garlic powder, onion powder, salt, and pepper until smooth. Stir in the sautéed vegetables.
- Add the drained spaghetti and shredded chicken to the sauce and toss until fully coated. Fold in 1 cup of cheddar cheese and all of the Monterey Jack cheese.
- Pour the mixture into the prepared baking dish and spread it evenly. Sprinkle the remaining 1 cup of cheddar cheese over the top.
- Cover the dish tightly with aluminum foil and bake at 350°F for 25 minutes.
- Remove the foil and bake for an additional 10 minutes until the cheese is melted, bubbly, and lightly golden. Let the casserole rest for 5 to 10 minutes before serving.
Nutrition
Notes
- Undercook your spaghetti by 2 minutes before baking — it finishes cooking in the oven, and over-boiling it first will result in mushy pasta.
- Use rotisserie chicken for the easiest prep and best flavor. One standard rotisserie chicken yields about 3 cups of shredded meat.
- Grate your cheese from a block rather than using pre-shredded. Pre-shredded cheese contains anti-caking agents that prevent smooth melting.
- Do not drain the Rotel. The liquid in the can adds essential flavor and keeps the sauce from being too thick.
- Make ahead: Assemble the casserole up to 24 hours in advance, cover tightly, and refrigerate unbaked. Add 10 to 15 extra minutes of covered bake time when cooking from cold.
- To freeze unbaked: Wrap the assembled casserole tightly in plastic wrap and then foil and freeze for up to 3 months. Thaw overnight in the refrigerator before baking as directed.
- Leftovers keep in the refrigerator for up to 4 days. Reheat covered with foil in a 350°F oven for 20 to 25 minutes, or microwave individual portions on medium power for 2 to 3 minutes.
- For a spicier version, use hot Rotel and add 1/2 teaspoon cayenne pepper to the sauce mixture.
- Substitute reduced-sodium soups and Greek yogurt in place of sour cream for a lighter version without sacrificing creaminess.
- If Rotel is unavailable, substitute one 14.5 oz can of diced tomatoes plus one 4 oz can of diced green chiles.
Private Notes
Tried this recipe?
Let us know how it was!Conclusion
Baked chicken spaghetti is one of those rare recipes that checks every box: it’s easy enough for a weeknight but impressive enough to bring to a potluck or family gathering.
The creamy, cheesy sauce wrapped around tender spaghetti and juicy shredded chicken is the kind of combination that immediately feels like home.
Give this recipe a try this week and see for yourself why it’s been a Southern kitchen staple for generations.
If you make it, leave a comment below and let me know how it turned out. Did you try any of the variations? I’d love to hear about your version.
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