Name: Creamy Chicken Tetrazzini Casserole Recipe
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: American
Ingredients: 10 ounce can cream of chicken soup; 10 ounce can cream of mushroom soup; 2 cups sour cream; 1/2 cup butter, melted; 1/2 cup low-sodium chicken broth; 1 teaspoon salt; 1/2 teaspoon pepper; 1/4 teaspoon garlic powder; 1/2 cup frozen peas; 1 pound seasoned cooked chicken, chopped or shredded; 1 pound thin spaghetti, cooked al dente; 1 1/2 cups shredded mozzarella cheese; 1/2 cup shredded cheddar cheese; 2 tablespoons grated Parmesan cheese; Fresh chopped parsley

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If you are craving a comforting, rich, and utterly satisfying dinner, this Creamy Chicken Tetrazzini Casserole Recipe is exactly what you need. Imagine tender, seasoned chicken tossed with perfectly cooked spaghetti and a luscious blend of sour cream, cream of chicken and mushroom soups, all baked under a golden blanket of mozzarella, cheddar, and Parmesan cheeses. The sweet pop of peas adds a fresh contrast, while the melty, cheesy finish makes every bite crave-worthy. It’s cozy, easy to prepare, and a guaranteed crowd-pleaser that warms both your heart and your belly.

Ingredients You’ll Need

A white bowl filled with a mixture of pale yellow melted butter covering the bottom and sides, topped with dollops of thick white sour cream and small piles of black pepper and a sprinkle of light brown spice on top. The bowl sits on a white marbled surface, with a metal whisk partly visible on the right side. Photo taken with an iphone --ar 4:5 --v 7

This recipe calls for simple, pantry-friendly ingredients that come together beautifully. Each element plays a vital role, from the creamy soups that create a luscious sauce to the cheeses that add gooey richness and color. Fresh herbs and seasonings lift the flavors, while peas bring a vibrant pop that brightens the dish visually and taste-wise.

Cream of chicken soup: Provides a creamy, savory base that enriches the casserole.
Cream of mushroom soup: Adds earthiness and a velvety texture to the sauce.
Sour cream: Gives tanginess and extra creaminess, balancing the richness.
Butter (melted): Infuses the dish with smooth, buttery flavor and silkiness.
Low-sodium chicken broth: Keeps the mixture moist without overpowering the flavors.
Salt and pepper: Essential seasonings to enhance everything else.
Garlic powder: Adds warmth and subtle depth without being overwhelming.
Frozen peas: Offer a sweet, fresh burst of color and flavor.
Seasoned cooked chicken (chopped or shredded): The hearty protein star of the dish that makes it filling.
Thin spaghetti (cooked al dente): Provides the perfect pasta canvas to soak up the creamy sauce.
Shredded mozzarella cheese: Melts beautifully for gooey, mild cheesiness.
Shredded cheddar cheese: Adds a sharper, tangy flavor contrast to mozzarella.
Grated Parmesan cheese: Sprinkled on top to create an irresistible golden crust.
Fresh chopped parsley: Finishing touch for color and a burst of freshness.

How to Make Creamy Chicken Tetrazzini Casserole Recipe

Step 1: Prepare Your Oven and Baking Dish

Start by preheating your oven to 350 degrees Fahrenheit. Grease a 9×13-inch baking dish with nonstick cooking spray to ensure the casserole won’t stick and will come out perfectly shaped.

Step 2: Mix the Creamy Sauce

Grab a large mixing bowl and whisk together the cream of chicken soup, cream of mushroom soup, sour cream, melted butter, chicken broth, salt, pepper, and garlic powder. This mixture is the heart of your “creaminess.” Whisking well ensures a smooth, velvety sauce base that will coat every strand of spaghetti and chunk of chicken beautifully.

Step 3: Combine the Main Ingredients

Add the frozen peas, seasoned cooked chicken, and cooked spaghetti into the sauce bowl. Toss gently but thoroughly so every ingredient gets fully coated with that luscious sauce. This step is crucial for even flavor distribution and that wonderfully creamy consistency you love in a Tetrazzini.

Step 4: Assemble the Casserole

Pour your combined mixture into the prepared baking dish and smooth it out with a spatula. Sprinkle the shredded mozzarella, cheddar, and grated Parmesan evenly over the top. This cheese trio will melt into a bubbly, golden blanket that’s simply irresistible.

Step 5: Bake to Perfection

Cover the casserole with foil to keep it moist while baking. Pop it in the oven for 30 minutes, then remove the foil and continue baking for an additional 15 minutes. This final step lets the cheese become golden and bubbly while the casserole heats through perfectly.

Step 6: Add Final Touches and Rest

When you take the casserole out of the oven, sprinkle fresh chopped parsley over the top. The vibrant green isn’t just pretty—it adds a fresh, herbaceous pop that balances the richness. Let the casserole stand for 5 to 10 minutes to set up slightly for easier serving.

How to Serve Creamy Chicken Tetrazzini Casserole Recipe

The image shows a white rectangular baking dish filled with a creamy baked pasta casserole. The dish has three main layers: the bottom layer is made of pale off-white cooked pasta mixed with green peas and pieces of chicken; the middle layer has a thick creamy white sauce; the top layer is a golden yellow melted cheese with a few melted white cheese patches, sprinkled evenly with small chopped green herbs. A silver fork and spoon are placed inside the dish, with some pasta twirled onto the fork, showing the creamy texture. The background surface is a white marbled texture. photo taken with an iphone --ar 4:5 --v 7

Garnishes

While the parsley adds a classic fresh touch, you can also experiment with a sprinkle of toasted bread crumbs for crunch or a dusting of smoked paprika to add a subtle smoky depth. These little details take your serving game to the next level.

Side Dishes

Since the casserole is rich and filling, lighter sides work best. A crisp green salad with a tart vinaigrette or steamed seasonal vegetables like broccoli or asparagus complement the creamy chicken tetrazzini perfectly. These sides add balance and a welcome crunch alongside the casserole’s softness.

Creative Ways to Present

If you want to impress, serve individual portions in small ramekins sprinkled with extra cheese and parsley, then broil for a couple of minutes until bubbly and golden on top. This personalized touch feels special and elegant for dinner guests or family nights in.

Make Ahead and Storage

Storing Leftovers

Leftover Creamy Chicken Tetrazzini Casserole Recipe keeps beautifully in an airtight container in the refrigerator for up to 3 days. The flavors actually get better as they mingle overnight. Just cover well to maintain moisture and prevent it from drying out.

Freezing

You can freeze the casserole either before or after baking. Freeze in a tightly sealed container for up to 3 months. To freeze before baking, assemble as usual, cover tightly with foil, then freeze. When ready, bake from frozen by adding extra baking time and watching closely to avoid overcooking.

Reheating

Reheat leftovers in the oven at 350 degrees Fahrenheit until warmed through, about 20-25 minutes covered with foil to keep moisture in. For faster reheating, microwave individual servings on medium power, stirring halfway, until heated evenly. Freshen with a sprinkle of parsley before serving.

FAQs

Can I use other types of pasta for this casserole?

Absolutely! While thin spaghetti is traditional and cooks perfectly, you can use linguine, fettuccine, or even penne for a fun texture twist, just adjust cooking time to maintain al dente bite.

Is it necessary to use both cream of chicken and cream of mushroom soups?

The combo adds depth and creaminess, but if you’re out of one, you can substitute with extra sour cream or a creamy béchamel sauce. Just keep the balance so the sauce isn’t too thin or overpowering.

Can I make this recipe vegetarian?

Definitely! Replace chicken with sautéed mushrooms, spinach, or a medley of your favorite veggies. Use vegetable broth instead of chicken broth for a fully veggie-friendly version.

What’s the best way to reheat leftovers without drying them out?

Cover leftovers with foil and add a splash of chicken broth or water before reheating in the oven to keep the casserole moist. Microwaving with a damp paper towel over the dish also helps retain moisture.

Can I prepare this casserole ahead of time for a party?

Yes! Assemble it the day before and keep it covered in the fridge. Simply bake it on the day of your event, adding a little extra time if the casserole is cold from the fridge.

Final Thoughts

This Creamy Chicken Tetrazzini Casserole Recipe is a truly special dish that feels like a warm hug on a plate. It’s perfect for family dinners, potlucks, or anytime you want to serve something comforting yet effortlessly delicious. Give it a try and watch it become a beloved staple in your recipe collection.