Chicken Spaghetti
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If cheesy comfort food is your love language, this Chicken Spaghetti is speaking your name. Creamy, gooey, and loaded with flavor, this casserole is everything you want after a long day.
This is exactly the kind of food I crave when I need something comforting, creamy, cheesy, and pure cozy vibes. I’ve simplified it, of course, because no one’s got time for a 10-step dinner on a weeknight, but it still delivers all the nostalgic, casserole goodness you’d expect. It’s been on repeat in our house, especially on those nights when only a food hug will do.
Why You’ll Love This Chicken Spaghetti
- Pure comfort – It’s creamy, cheesy, cozy, and the kind of dish that feels like a warm hug on a plate.
- Weeknight-friendly – No complicated steps, no fancy ingredients, just pantry staples and one casserole dish of joy.
- Crowd-pleaser – Even picky eaters ask for seconds. It’s got that classic casserole magic.
- Make-ahead + freezer friendly – Perfect for prepping ahead or doubling and freezing for busy weeks.
- Customizable – Use what you’ve got, swap the protein, switch up the cheese, sneak in extra veggies. It all works.
Before You Start: Tips & Ingredient Notes
Choosing the Chicken
Rotisserie chicken is the MVP here, flavorful, tender, and saves you the step of cooking it yourself. But if you’ve got leftover roasted chicken or even shredded poached chicken, toss it in. Just don’t use anything too dry, we want juicy bites, not sawdust.
Spaghetti Tips
Cook your spaghetti al dente, it’ll finish cooking in the oven, soaking up all that creamy goodness. Nobody wants mushy noodles. Tossing them with butter before mixing prevents clumping and adds a little extra love (and flavor).
Veggie Boost
Yes, you could leave out the onions and bell peppers, but don’t. They add sweetness and balance to all that richness. Dice them small if you’ve got veggie skeptics in the house.
The Cheese Situation
Cheddar brings the bold flavor, mozzarella melts like a dream, and Parmesan gives that salty kick. Use the real stuff and grate it yourself if you can, it melts better and tastes way better than the bagged kind.
Soup Talk
Cream of chicken + cream of mushroom = the magic duo. This combo creates a velvety sauce without needing to make a roux. Lazy? Maybe. Delicious? Absolutely.
Spice It Up
Rotel (diced tomatoes with green chilies) gives this casserole just enough zip. If you’re not into heat, grab the mild version. Want more kick? Add a dash of hot sauce or a pinch of red pepper flakes.
Make It Your Own
No spaghetti? Use penne, linguine, or whatever pasta you’ve got. Want to sneak in some spinach or mushrooms? Go for it. This recipe’s forgiving, just like all great comfort food should be.
Bring a big pot of salted water to a boil and cook your spaghetti until al dente. That means still a bit firm, it’ll keep cooking in the oven, and overcooked spaghetti turns the whole dish into a mushy mess. Once drained, toss it with a bit of butter so it doesn’t stick together while you prep the rest. This also adds flavor, because butter.
In a large skillet, heat your olive oil and sauté the diced onion and green bell pepper for about 4–5 minutes. You want them soft and fragrant, not mushy. Then toss in the garlic for another minute, don’t walk away, garlic burns fast. This base layer of flavor makes a difference.
Add both cans of soup (cream of chicken and cream of mushroom), the Rotel, chicken broth, and all your seasonings. Yes, it looks like a lot going in, but trust the process, this is what gives the sauce that creamy, savory depth. Simmer for 5–7 minutes so everything blends and thickens slightly. Give it a taste and adjust the salt and pepper if needed.
Grab your biggest mixing bowl, this recipe makes a generous casserole. Combine the cooked spaghetti, the shredded chicken, half the cheddar cheese, and all that glorious sauce. Use tongs or two big spoons and really mix it well so every strand of spaghetti is coated.
Transfer the mixture to a greased 9×13-inch baking dish. Spread it out evenly. Top with the remaining cheddar cheese, then sprinkle on the mozzarella and Parmesan. Cover tightly with foil so it stays moist as it bakes.
Bake at 375°F (190°C) for 20 minutes, then remove the foil and bake uncovered for another 10–15 minutes until the cheese is golden and bubbly. If your oven runs cool, don’t be afraid to hit it with a few minutes under the broiler, but keep a close eye on it. Cheese goes from golden to scorched real quick.
Let the casserole sit for about 5 minutes before serving. That gives the sauce a chance to settle and makes for cleaner slices.
How To Serve
This Chicken Spaghetti is a meal on its own, creamy, cheesy, cozy, but if you want to make it feel like a real sit-down dinner (without breaking a sweat), here are some of my favorite pairings:
Easy Garlic Bread
Caesar Salad Recipe
Skillet Green Beans
Mini Caprese Salad Bites
Frequently Asked Questions
Can I make this ahead of time?
Yes! Assemble the whole thing, cover it with foil, and pop it in the fridge for up to 2 days before baking. Add 5–10 extra minutes to the bake time if it’s coming straight from the fridge.
Can I freeze it?
Absolutely. Chicken Spaghetti freezes like a champ. Wrap tightly (double layer is best) and freeze before baking. When ready to eat, thaw overnight in the fridge, then bake as directed.
Can I use a different pasta?
For sure. Any long pasta like linguine or fettuccine works well. Even penne or rotini if that’s what’s in the pantry. Just don’t overcook it.
What can I use instead of cream of mushroom?
You can use two cans of cream of chicken, or swap one out with cream of celery. Or go all-in with a homemade béchamel if you’re feeling ambitious, but the canned stuff really does the trick here.
Can I add veggies?
Totally. Sliced mushrooms, spinach, or even a handful of frozen peas go great in this. Just sauté or thaw them first to keep things from getting watery.
How do I store leftovers?
Cool completely, then refrigerate in an airtight container for up to 4 days. Reheat in the microwave or covered in the oven until warmed through. It actually reheats beautifully!
Try These Casseroles Next
- Million Dollar Spaghetti
- Baked Ravioli
- Baked Spaghetti Casserole
- Baked Penne with Italian Sausage
- Ravioli Alfredo Bake
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Chicken Spaghetti
Video
Ingredients
For the Casserole:
- 12 ounces spaghetti
- 2 tablespoons butter (for tossing the pasta)
- 2 cups cheddar cheese (shredded )
- 1 cup mozzarella cheese (shredded )
- ¼ cup Parmesan cheese (grated )
- fresh parsley (for garnish)
For the Sauce:
- 3 cups cooked chicken (shredded, rotisserie chicken works well)
- 2 tablespoons olive oil
- 1 small onion (diced)
- 1 medium green bell pepper (diced)
- 3 cloves garlic (minced)
- 10.5 ounces cream of chicken soup (1 can)
- 10.5 ounces cream of mushroom soup (1 can)
- 14.5 ounces diced tomatoes with green chilies (like Rotel)
- 1 cup chicken broth (low sodium or no sodium added)
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1 teaspoon paprika (optional)
- 2 teaspoons Italian seasoning
- salt and black pepper (to taste)
Before You Begin! If you make this, please leave a review and rating letting us know how you liked this recipe! This helps our business thrive & continue providing free recipes.
Instructions
- Bring a large pot of salted water to a boil. Cook the spaghetti until al dente according to package instructions. Drain and toss with butter to prevent sticking. Set aside.
- Heat olive oil in a large skillet over medium heat. Add the diced onion and green bell pepper. Cook until softened, about 4-5 minutes. Add the minced garlic and cook for another minute.
- Stir in the cream of chicken soup, cream of mushroom soup, diced tomatoes with green chilies, chicken broth, garlic powder, onion powder, paprika (if using), Italian seasoning, salt, and black pepper. Simmer for 5-7 minutes, stirring occasionally, until the sauce is smooth and well combined.
- In a large mixing bowl, combine the cooked spaghetti, shredded chicken, half of the cheddar cheese, and the sauce. Mix until everything is evenly coated.
- Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish.
- Pour the spaghetti mixture into the prepared dish and spread it out evenly.
- Sprinkle the remaining cheddar cheese, mozzarella cheese, and Parmesan cheese evenly over the top.
- Cover the dish with foil and bake for 20 minutes. Remove the foil and bake for an additional 10-15 minutes, or until the cheese is melted and bubbly.
- Let the casserole rest for 5 minutes. Garnish with fresh parsley before serving.
Equipment
Notes
- Spaghetti: Cook it al dente, you want it firm enough to hold up through baking. Overcooked spaghetti = mush city. And don’t skip the butter toss. It’s not just for flavor, it keeps things from clumping into a spaghetti brick.
- Chicken: Rotisserie is your shortcut hero, but any cooked, shredded chicken will do. Just make sure it’s seasoned. Bland chicken will ruin the whole mood.
- Cheese Blend: Cheddar, mozzarella, and Parmesan are the holy trinity here. Don’t sub all the cheese for mozzarella unless you want a gooey puddle. Use real Parm if you can, it adds that sharp, salty depth.
- Cream Soups: Yes, I use canned. Yes, it’s delicious. This is comfort food, not a culinary thesis. That said, if you want to make your own, go ahead, but I’m sticking with pantry-friendly.
- Want to spice it up? Use medium or hot Rotel. Add crushed red pepper flakes. Or drizzle some hot sauce over your serving if you’re the only heat lover in the house.
- Make it ahead: Assemble the night before, cover, and refrigerate. Dinner party the next day? Boom, one less thing to stress over.
- Freezer-friendly: Yep. Wrap tightly (foil + freezer bag) and freeze unbaked for up to 3 months. Defrost in the fridge overnight and bake like normal.
Nutrition Information
Notice: Nutrition is auto-calculated for your convenience. Where relevant, we recommend using your own nutrition calculations.
