If you are searching for a cozy, comforting dish that brings together tender chicken, creamy sauce, and perfectly cooked pasta, this Easy Chicken Tetrazzini Recipe is an absolute winner. It’s a delicious blend of savory flavors and textures that feel like a warm hug in a bowl. Whether you’re cooking for family or hosting friends, this baked pasta casserole offers a satisfying and delightful experience that’s simple enough for a weeknight but special enough to impress anyone around your table.

Ingredients You’ll Need
Getting the right ingredients is key to nailing the creamy, flavorful magic of this dish. Each component plays a role, from the tender shredded chicken to the melty mozzarella, creating a harmonious balance of taste, texture, and color that makes this recipe truly shine.
- 12 oz spaghetti, broken in half and cooked al dente: Ensures perfect bite-sized pasta that holds up well under the creamy sauce.
- 3 cups cooked shredded chicken breast: Provides the hearty protein base; rotisserie chicken works beautifully here for ease and flavor.
- 2 tablespoons unsalted butter: Adds richness to the roux and helps soften the onions and mushrooms.
- 1 small yellow onion finely chopped: Lends sweetness and depth when sautéed.
- 2 cloves garlic minced: Infuses the sauce with warm, aromatic notes.
- 1/2 cup sliced mushrooms: Introduces an earthy element and moist texture.
- 1/4 cup all-purpose flour: Creates the perfect thickening base for the creamy sauce.
- 2 cups chicken broth: Adds savory depth and balances the creaminess.
- 1 cup whole milk: Gives the sauce its luscious, smooth consistency.
- 1 cup sour cream: Brings tang and ultra-creamy texture while keeping the casserole rich but light.
- 1/2 cup grated Parmesan cheese: Sharp and nutty flavor that enhances the sauce’s complexity.
- 1 1/2 cups shredded mozzarella cheese: Melts into gooey goodness that’s irresistible when baked.
- 1 teaspoon salt: Balances and elevates all flavors.
- 1/2 teaspoon black pepper: Adds a gentle kick and warmth.
- 1/2 teaspoon garlic powder: Boosts the garlicky flavor for extra savoriness.
- 1/2 teaspoon dried thyme: Adds subtle herbal notes that complement the chicken beautifully.
- 1/2 cup breadcrumbs (optional topping): Provides a crunchy golden crust for textural contrast.
- Chopped parsley for garnish (optional): Adds fresh color and a mild brightness to the finished dish.
How to Make Easy Chicken Tetrazzini Recipe
Step 1: Prepare the Base
Start by preheating your oven to 350°F (175°C). In a large skillet over medium heat, melt the butter until it’s foamy and fragrant. Add the finely chopped onion and cook until it’s soft and translucent, about 3 to 4 minutes. This step builds a flavorful foundation that is crucial for delicious results.
Step 2: Add Garlic and Mushrooms
Next, stir in minced garlic and sliced mushrooms. Cook for another 3 minutes, letting the mushrooms soften and release their earthy juices. This combination makes your kitchen smell incredible and elevates the flavor profile of the sauce.
Step 3: Make the Creamy Sauce
Sprinkle the flour evenly over the vegetables and stir for 1 minute to cook off the raw taste. Slowly whisk in the chicken broth and whole milk, stirring constantly to prevent lumps. Keep cooking this mixture for about 5 to 6 minutes until it thickens perfectly, turning into a silky smooth sauce.
Step 4: Flavor and Combine
Mix in the sour cream, salt, black pepper, garlic powder, and dried thyme to the sauce. Then, fold in the shredded chicken and cooked spaghetti, making sure everything is evenly coated. Finally, stir in the Parmesan cheese and 1 cup of mozzarella, which start to melt into ultimate creaminess.
Step 5: Bake to Perfection
Transfer the combined mixture into a greased 9×13-inch baking dish. Sprinkle the remaining 1/2 cup of mozzarella on top, and if you like a crispy topping, add breadcrumbs too. Bake uncovered for 25 to 30 minutes, or until bubbly and lightly golden on the edges. Your kitchen will fill with the warm, inviting aroma of baked comfort food.
How to Serve Easy Chicken Tetrazzini Recipe

Garnishes
A sprinkle of freshly chopped parsley adds a pop of vibrant green color and a subtle freshness that balances the richness of this creamy pasta dish. It’s a simple touch that makes the presentation feel both elegant and inviting.
Side Dishes
Pair this Easy Chicken Tetrazzini Recipe with a crisp green salad or steamed vegetables like broccoli or green beans for a well-rounded meal. A bright citrus vinaigrette or lemon wedges can also help cut through the richness if you want an extra layer of flavor contrast.
Creative Ways to Present
For a fun twist, serve individual portions in small ramekins or mini cast iron skillets for a cozy, rustic look. Adding a light drizzle of truffle oil or a few cracked red pepper flakes before serving can also elevate the dish, making it feel even more special for guests or family dinners.
Make Ahead and Storage
Storing Leftovers
This dish reheats beautifully in the refrigerator for up to 3 days. Transfer leftovers to an airtight container to retain moisture and freshness. It’s perfect for quick lunches or dinners when you want a satisfying meal without extra cooking.
Freezing
You can freeze this casserole before baking by covering it tightly with foil and placing it in a freezer-safe container. It keeps well for up to 2 months. When ready to enjoy, thaw overnight in the fridge before baking as directed to maintain its creamy texture and flavor.
Reheating
Reheat leftovers in the oven at 350°F (175°C) until warmed through and bubbly, usually about 20 minutes. You can also microwave individual servings for a quicker option, but baking helps keep that crispy topping nice and fresh.
FAQs
Can I use rotisserie chicken for this recipe?
Absolutely! Rotisserie chicken is a fantastic shortcut that adds great flavor and saves time, making this Easy Chicken Tetrazzini Recipe even easier to prepare.
Is there a substitute for sour cream in the sauce?
Yes, Greek yogurt is a popular substitute that provides a similar tangy creaminess with a lighter profile. Just be sure to add it off the heat to prevent curdling.
Can I add vegetables to the casserole?
Definitely. Frozen peas, steamed broccoli, or spinach are wonderful additions that bring color and extra nutrition to the dish.
What type of cheese works best for topping?
Mozzarella is ideal due to its melting qualities and mild flavor, but you can experiment with cheddar or Gruyère for a different twist.
Is this dish freezer-friendly after baking?
It’s best to freeze before baking to keep the texture intact, but you can freeze leftovers after baking and reheat gently to enjoy later.
Final Thoughts
If you’re craving a home-cooked meal that’s bursting with creamy, savory goodness and is simple to toss together, this Easy Chicken Tetrazzini Recipe is your new go-to. It’s a feel-good dish that brings everyone to the table with smiles and satisfied appetites. Give it a try—you’ll be hooked from the very first bite!
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Easy Chicken Tetrazzini Recipe
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 6 servings
- Category: Main Course
- Method: Baking
- Cuisine: American
- Diet: Kid-Friendly
Description
This Easy Chicken Tetrazzini is a creamy, comforting pasta bake featuring tender chicken, mushrooms, and a rich Parmesan cream sauce, all baked to a golden bubbly perfection. Perfect for a family-friendly main course, it combines classic Italian-American flavors with simple ingredients for a satisfying meal.
Ingredients
Pasta and Chicken
- 12 oz spaghetti, broken in half and cooked al dente
- 3 cups cooked shredded chicken breast
Sauce and Vegetables
- 2 tablespoons unsalted butter
- 1 small yellow onion, finely chopped
- 2 cloves garlic, minced
- 1/2 cup sliced mushrooms
- 1/4 cup all-purpose flour
- 2 cups chicken broth
- 1 cup whole milk
- 1 cup sour cream
Cheese and Seasonings
- 1/2 cup grated Parmesan cheese
- 1 1/2 cups shredded mozzarella cheese (divided)
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1/2 teaspoon garlic powder
- 1/2 teaspoon dried thyme
Topping and Garnish
- 1/2 cup breadcrumbs (optional topping)
- Chopped parsley for garnish (optional)
Instructions
- Preheat Oven: Preheat your oven to 350°F (175°C) to prepare for baking the casserole later.
- Sauté Vegetables: In a large skillet over medium heat, melt the butter. Add the finely chopped onion and cook until softened, about 3 to 4 minutes. Then stir in the minced garlic and sliced mushrooms, cooking for an additional 3 minutes until fragrant and tender.
- Make the Sauce Base: Sprinkle the all-purpose flour over the sautéed vegetables and stir constantly for 1 minute to cook the flour and create a roux. Slowly whisk in the chicken broth and whole milk, stirring continuously to avoid lumps. Continue cooking and stirring until the sauce thickens, which should take about 5 to 6 minutes.
- Add Creaminess and Season: Stir in the sour cream along with salt, black pepper, garlic powder, and dried thyme. Mix well to incorporate all the flavors into the creamy sauce.
- Combine Chicken and Pasta: Add the shredded cooked chicken and cooked spaghetti directly into the skillet. Toss everything together until the chicken and pasta are evenly coated with the sauce. Then, stir in the grated Parmesan cheese and 1 cup of mozzarella cheese until melted and combined.
- Prepare for Baking: Transfer the mixture into a greased 9×13-inch baking dish, spreading it evenly. Sprinkle the remaining 1/2 cup of mozzarella cheese on top, then, if using, add the breadcrumbs for a crispy topping.
- Bake: Place the baking dish uncovered in the preheated oven and bake for 25 to 30 minutes, or until the casserole is bubbly and the top is lightly golden brown.
- Garnish and Serve: Remove from the oven, garnish with chopped parsley if desired, and serve warm for a comforting meal.
Notes
- Rotisserie chicken is a convenient shortcut and works perfectly in this recipe.
- For a lighter version, substitute Greek yogurt for sour cream.
- Add frozen peas or steamed broccoli to incorporate extra vegetables and color.

