Easy Chicken Tetrazzini Recipe: Creamy, Cheesy and Perfect for Dinner
Easy Chicken Tetrazzini is the kind of comforting dinner that earns a permanent place in the family recipe collection. Tender chicken and spaghetti are folded into a rich, creamy mushroom sauce, covered with plenty of melted cheese, and baked until bubbling around the edges and beautifully golden on top.
Despite its impressive appearance, this easy chicken tetrazzini recipe is designed for straightforward home cooking. Using already-cooked chicken keeps preparation manageable, while a homemade sauce gives the casserole a fresher, more balanced flavor than versions made entirely with canned soup.
It is also wonderfully practical. Chicken tetrazzini can be assembled ahead of time, making it useful for busy weeknights, Sunday dinners, potlucks, or feeding a crowd. Add a crisp green salad or roasted vegetables and you have a satisfying meal with very little last-minute work.
Ingredients
This recipe makes approximately 8 servings.
For the Pasta and Chicken
- 12 ounces spaghetti
- 3 cups cooked chicken, shredded or diced
- 8 ounces cremini or white mushrooms, sliced
- 2 tablespoons unsalted butter
- 1 tablespoon olive oil
- 1 small yellow onion, finely chopped
- 3 garlic cloves, minced
- 1 teaspoon kosher salt, divided
- 1/2 teaspoon freshly ground black pepper
For the Creamy Tetrazzini Sauce
- 3 tablespoons unsalted butter
- 1/4 cup all-purpose flour
- 2 cups low-sodium chicken broth
- 1 cup whole milk
- 1/2 cup heavy cream
- 1 teaspoon Italian seasoning
- 1/4 teaspoon ground nutmeg
- 1/2 cup finely grated Parmesan cheese
For the Topping
- 1 1/2 cups shredded mozzarella cheese
- 1/4 cup finely grated Parmesan cheese
- 1/3 cup panko breadcrumbs
- 1 tablespoon melted unsalted butter
- 2 tablespoons chopped fresh parsley, for serving
How to Make Easy Chicken Tetrazzini
1. Prepare the Oven and Baking Dish
Preheat the oven to 375°F. Lightly grease a 9-by-13-inch baking dish with butter or nonstick cooking spray.
Bring a large pot of generously salted water to a boil for the spaghetti.
2. Cook the Spaghetti
Add the spaghetti and cook it for about 2 minutes less than the package directions for al dente. The pasta should still have a noticeable bite in the center because it will continue cooking in the oven.
Drain well and set aside. Avoid overcooking the pasta at this stage, as overly soft spaghetti can become mushy once combined with the sauce and baked.
3. Sauté the Mushrooms and Onion
While the pasta cooks, heat 2 tablespoons butter and the olive oil in a large skillet or Dutch oven over medium-high heat.
Add the sliced mushrooms and cook for 5 to 7 minutes, stirring occasionally, until their released moisture has mostly evaporated and the mushrooms begin to brown.
Add the chopped onion and cook for another 3 to 4 minutes, until softened. Stir in the garlic and cook for about 30 seconds, just until fragrant.
Season with about half of the salt and the black pepper. Transfer the mushroom mixture to a plate.
4. Make the Creamy Sauce
Reduce the heat to medium. Melt 3 tablespoons butter in the same pan.
Sprinkle in the flour and whisk continuously for about 1 minute. Cooking the flour briefly removes its raw taste without allowing it to brown significantly.
Gradually pour in the chicken broth while whisking continuously to prevent lumps. Add the milk and heavy cream.
Stir in the Italian seasoning, nutmeg, and remaining salt.
Bring the mixture to a gentle simmer and cook for approximately 4 to 6 minutes, stirring frequently, until the sauce has thickened enough to lightly coat the back of a spoon.
Do not rapidly boil the sauce once the dairy has been added.
5. Add the Parmesan
Remove the pan from the heat and stir in 1/2 cup Parmesan until melted and incorporated.
Taste the sauce and adjust the salt and pepper if necessary. Remember that the chicken and Parmesan contribute additional seasoning.
The sauce should look slightly looser than a typical finished cream sauce. The pasta will absorb some of its moisture as the casserole bakes.
6. Combine the Chicken Tetrazzini
Add the cooked spaghetti, chicken, and sautéed mushroom mixture to the sauce.
Using tongs or two large spoons, gently toss everything together until the pasta and chicken are evenly coated.
Transfer the mixture to the prepared 9-by-13-inch baking dish and spread it into an even layer.
7. Add the Cheesy Topping
Sprinkle the mozzarella and remaining 1/4 cup Parmesan evenly over the casserole.
Combine the panko breadcrumbs with 1 tablespoon melted butter, then scatter them over the cheese.
This combination creates an appealing contrast between the creamy pasta underneath and the crisp, golden topping.
8. Bake Until Bubbling
Bake uncovered at 375°F for 25 to 30 minutes, or until the sauce is bubbling around the edges and the cheese has completely melted.
For a deeper golden-brown surface, broil the casserole for 1 to 2 minutes at the end. Watch it continuously under the broiler because breadcrumbs and cheese can brown very quickly.
9. Rest Before Serving
Remove the chicken tetrazzini from the oven and allow it to rest for 5 to 10 minutes.
This short resting period lets the sauce settle and cling more effectively to the pasta instead of immediately running across the plate.
Finish with chopped fresh parsley and serve warm.
Expert Tips for the Best Chicken Tetrazzini
Undercook the pasta slightly. Spaghetti continues absorbing liquid during baking. Cooking it just shy of al dente helps preserve its texture.
Brown the mushrooms properly. Give mushrooms enough time for their excess water to evaporate. This concentrates their savory flavor and prevents unnecessary moisture from diluting the cream sauce.
Use cooked chicken for convenience. Leftover roasted chicken, poached chicken breasts, or rotisserie chicken all work well. Remove the skin and bones before measuring.
Keep the sauce slightly loose. A sauce that seems perfectly thick before baking may become too dry after 30 minutes in the oven. The mixture should be creamy and generously sauced when it goes into the baking dish.
Grate Parmesan finely. Finely grated Parmesan melts more smoothly into the sauce than large shreds.
Let the casserole rest. Five to 10 minutes makes a noticeable difference in the final consistency.
Chicken Tetrazzini Variations
Turkey Tetrazzini
Replace the chicken with an equal amount of cooked shredded turkey. This variation is particularly useful for leftover Thanksgiving or holiday turkey.
Chicken Tetrazzini Without Mushrooms
If mushrooms are not a favorite, simply leave them out. You can add approximately 1 cup of frozen peas during the final assembly for additional color and sweetness.
Extra-Vegetable Tetrazzini
Add cooked broccoli florets, spinach, peas, or asparagus. Vegetables with high moisture content should be cooked and drained before they are mixed into the casserole.
Lighter Chicken Tetrazzini
Replace the heavy cream with additional whole milk and reduce the mozzarella to 1 cup. The finished casserole will be somewhat less rich but should remain pleasantly creamy.
Gluten-Free Chicken Tetrazzini
Use your preferred gluten-free spaghetti and replace the all-purpose flour with a reliable 1-to-1 gluten-free flour blend suitable for thickening sauces. Choose gluten-free breadcrumbs for the topping and verify that the chicken broth is gluten-free.
What to Serve With Chicken Tetrazzini
Because creamy chicken tetrazzini is rich and substantial, the best side dishes provide freshness, acidity, or crisp texture.
A simple green salad dressed with lemon vinaigrette is an excellent choice. Roasted broccoli, asparagus, Brussels sprouts, or green beans also balance the creamy pasta without competing with its flavor.
Garlic bread can turn the dish into an especially hearty meal, although a crusty baguette is often all that is needed to catch any remaining sauce.
For entertaining, serve smaller portions of tetrazzini alongside a generous salad and roasted seasonal vegetables. A sprinkle of parsley immediately before serving adds freshness and visual contrast to the golden casserole.
Make-Ahead Chicken Tetrazzini
One reason this recipe works so well for family dinners is that most of the preparation can be completed in advance.
Assemble the casserole through the point of adding the cheese and breadcrumb topping. Cover the baking dish tightly and refrigerate for up to 24 hours.
When ready to cook, let the casserole stand at room temperature while the oven preheats. Because the center will still be chilled, it may require approximately 5 to 10 additional minutes of baking.
Bake until the center is thoroughly hot and the sauce is bubbling around the edges.
How to Store Leftover Chicken Tetrazzini
Allow leftovers to cool promptly, then transfer them to airtight containers or cover the baking dish tightly.
Store cooked chicken tetrazzini in the refrigerator for up to 3 to 4 days.
For longer storage, divide cooled tetrazzini into freezer-safe portions and freeze for up to 2 months for the best texture. Cream sauces can change slightly after freezing, but reheating gently helps restore their consistency.
Thaw frozen portions overnight in the refrigerator before reheating whenever possible.
How to Reheat Chicken Tetrazzini
For individual portions, microwave until steaming hot throughout, pausing once to stir or reposition the pasta for more even heating.
For larger portions, place the tetrazzini in an oven-safe dish, cover with foil, and reheat at 350°F for approximately 20 to 25 minutes, or until thoroughly heated.
If the pasta appears dry, add a tablespoon or two of milk or chicken broth before reheating. This small amount of moisture helps loosen the sauce without making the casserole watery.
Why This Easy Chicken Tetrazzini Recipe Works
A successful chicken tetrazzini needs balance. Too much cheese or cream can make it excessively heavy, while too little sauce produces dry pasta after baking.
This version uses chicken broth for savory depth, milk and cream for richness, and Parmesan for a concentrated salty, nutty flavor. Mushrooms and onions add another layer of savoriness, while the mozzarella provides the familiar stretchy cheese topping.
The buttered panko is equally important. Its crisp texture contrasts with the soft pasta and velvety sauce, making every serving more interesting.
Most importantly, the recipe uses familiar ingredients and uncomplicated techniques while still producing the kind of creamy, bubbling chicken pasta casserole that feels special when it reaches the table.
Nutrition Information
The following values are approximate and based on 1 serving when the casserole is divided into 8 portions. Exact nutrition will vary according to the chicken, cheese, broth, and other ingredients used.
| Nutrient | Approximate Amount |
|---|---|
| Calories | 575 kcal |
| Protein | 32 g |
| Fat | 29 g |
| Saturated Fat | 16 g |
| Carbohydrates | 47 g |
| Fiber | 3 g |
| Sugar | 6 g |
| Sodium | 690 mg |
Easy Chicken Tetrazzini FAQ
What is chicken tetrazzini?
Chicken tetrazzini is a baked pasta casserole typically made with cooked chicken, long pasta such as spaghetti, mushrooms, a creamy sauce, and cheese. The assembled pasta is baked until hot and bubbling.
Can I use rotisserie chicken?
Yes. Rotisserie chicken is one of the easiest ways to prepare this recipe. Shred or dice the meat and measure approximately 3 cups. If the chicken is heavily seasoned, taste the finished sauce before adding additional salt.
What pasta is best for chicken tetrazzini?
Spaghetti is the classic and most recognizable choice. Linguine or fettuccine can also work, although thicker pasta may require slightly different cooking times.
Why is my chicken tetrazzini dry?
The most common causes are insufficient sauce, overcooked pasta, or baking the casserole for too long. The sauce should be relatively loose before the casserole enters the oven, and the spaghetti should be slightly undercooked.
Can chicken tetrazzini be frozen?
Yes. Chicken tetrazzini can be frozen, although the creamy sauce may become slightly less smooth after thawing. For best results, freeze tightly covered portions for up to 2 months and thaw them in the refrigerator before reheating.
Final Thoughts
This Easy Chicken Tetrazzini recipe combines everything a dependable comfort-food dinner should offer: tender chicken, creamy pasta, savory mushrooms, melted cheese, and a crisp golden topping.
It is simple enough for a weeknight but generous enough for company, and the make-ahead option makes it especially practical when dinner needs to be prepared around a busy schedule.
Serve it bubbling from the oven with a bright green salad or roasted vegetables, and you have a creamy, satisfying chicken casserole that is equally suited to an everyday family meal or a relaxed weekend gathering.