This Creamy Chicken Spaghetti Casserole is a warm hug in a dish! It’s filled with tender chicken, spaghetti, and a rich, cheesy sauce that’ll make your taste buds dance.
This dish is perfect for busy nights. Just mix everything together, pop it in the oven, and relax while it cooks. Easy peasy! I love having leftovers for lunch, too—so tasty!
Key Ingredients & Substitutions
Spaghetti: Regular spaghetti works well, but feel free to swap in any pasta you like! Penne or rotini are great alternatives. Just adjust the cooking time as needed based on the pasta shape.
Cooked Chicken: Shredded rotisserie chicken is my go-to for convenience. If you have leftover chicken or even turkey, use that! For a vegetarian option, consider using cooked mushrooms or chickpeas instead.
Cream of Mushroom Soup: This adds creaminess, but if you’re avoiding processed foods, you can make your own or substitute with homemade béchamel. Cream of chicken soup or even a can of diced tomatoes can work too.
Sour Cream: For a twist, replace it with Greek yogurt for added protein, or use a dairy-free version if needed. Both options maintain that creamy texture.
Cheddar Cheese: I love sharp cheddar for its bold flavor! You can mix it up with Monterey Jack, Colby, or even mozzarella for a milder taste. Vegan cheese is also an option for dairy-free diets.
How Do I Make Sure My Casserole Is Creamy and Delicious?
To ensure a smooth and creamy casserole, it’s important to combine the wet ingredients thoroughly before adding the pasta and chicken. Here’s how:
- Mix the cream soup, sour cream, milk, and cheese until smooth and lump-free.
- Adding warm pasta will help everything blend better, so consider mixing your pasta right after draining.
- Toss everything gently but thoroughly to coat all ingredients in the creamy mixture.
This attention to detail will help you achieve the perfect texture and flavor in your casserole!
How to Make Creamy Chicken Spaghetti Casserole
Ingredients You’ll Need:
For the Casserole:
- 8 ounces spaghetti
- 2 cups cooked chicken, shredded or diced
- 1 tablespoon olive oil or butter
- 1 small onion, finely chopped
- 2 cloves garlic, minced
- 1 can (10.5 ounces) cream of mushroom soup (or cream of chicken soup)
- 1 cup sour cream
- 1 cup shredded cheddar cheese (plus extra for topping)
- 1/2 cup milk
- 1/2 cup diced green bell pepper (optional)
- 1/2 teaspoon paprika
- Salt and black pepper, to taste
- Fresh parsley or green onions, chopped (optional garnish)
How Much Time Will You Need?
This delicious casserole takes about 15 minutes to prepare. Then, you’ll need to bake it for 25-30 minutes. In total, set aside about 45-50 minutes to enjoy this creamy chicken spaghetti casserole!
Step-by-Step Instructions:
1. Preheat the Oven and Prepare the Baking Dish:
Start by preheating your oven to 350°F (175°C). While the oven is warming up, grease a 9×13-inch baking dish to prevent sticking.
2. Cook the Spaghetti:
Cook the spaghetti according to the package instructions until it’s al dente, which means it should still have a bit of bite. Once cooked, drain the spaghetti and set it aside.
3. Sauté the Onions and Garlic:
In a large skillet, heat the olive oil or butter over medium heat. Add the chopped onion and minced garlic, sautéing them together until the onion becomes soft and translucent, which takes about 3-4 minutes. If you’re using green bell pepper, toss it in for an additional 2 minutes of cooking.
4. Mix the Creamy Sauce:
In a large mixing bowl, combine the cream of mushroom soup, sour cream, milk, and shredded cheddar cheese. Add the paprika, salt, and pepper. Stir everything together until it’s nice and smooth.
5. Combine All the Ingredients:
Now, add the cooked spaghetti, shredded chicken, and sautéed vegetables into the creamy sauce. Gently stir everything together, making sure the pasta and chicken are well coated in that delicious mixture.
6. Bake the Casserole:
Transfer the mixture into your prepared baking dish, spreading it out evenly. If you like, sprinkle a little extra cheddar cheese on top for added cheesiness. Place your casserole in the preheated oven and bake for about 25-30 minutes, or until it’s bubbly and the cheese is melted and slightly golden.
7. Let It Rest:
Once it’s ready, take the casserole out of the oven and let it rest for about 5 minutes. This helps it set a little, making it easier to serve. If you want, sprinkle some fresh parsley or chopped green onions on top for a pop of color.
Enjoy your creamy, cheesy chicken spaghetti casserole with a side salad or some crusty bread!
Frequently Asked Questions (FAQ)
Can I Use Leftover Rotisserie Chicken?
Absolutely! Leftover rotisserie chicken is a perfect option for this casserole. Just shred or dice the chicken and mix it in. It adds flavor and saves time!
What Can I Substitute for Cream of Mushroom Soup?
If you’re looking for alternatives, you can use cream of chicken soup or even a homemade béchamel sauce. For a lighter option, consider using a blend of Greek yogurt and broth, using the same quantity as the soup.
How Long Will Leftovers Keep?
Store leftovers in an airtight container in the fridge for up to 3-4 days. To reheat, simply warm in the microwave or bake in the oven at 350°F (175°C) until heated through, adding a splash of milk if needed to maintain creaminess.
Can I Freeze the Casserole?
Yes! You can freeze the unbaked casserole for up to 3 months. Just cover it tightly with foil or plastic wrap. When ready to bake, thaw it in the fridge overnight and then bake according to the instructions. You may need to adjust the cooking time slightly.
