
This Chicken Tetrazzini is the ultimate creamy, cheesy pasta casserole that transforms simple ingredients into pure comfort food. Perfect for weeknight dinners, potlucks, or using up leftover turkey or chicken.

If there is one casserole that has never once come back from a potluck with leftovers, it is Chicken Tetrazzini. Tender pasta, juicy shredded chicken, earthy mushrooms, and a velvety from-scratch cream sauce all come together under a golden, bubbling cheese and breadcrumb crust. It is cozy, crowd-pleasing, and somehow even better the next day.
Whether you are making this as a hearty weeknight dinner, looking for a brilliant one-pot Turkey Tetrazzini idea after Thanksgiving, or just craving the kind of comfort food that wraps around you like a warm blanket, this recipe delivers every single time.
A lot of Tetrazzini recipes lean on canned cream of mushroom soup, and while that version has its charm, building the sauce from scratch takes only about 10 extra minutes and makes a genuinely dramatic difference. Here is what sets this version apart:
Chef's Tip: Cold cream cheese will clump in your sauce. Let it sit out for at least 20 minutes before you start cooking and cut it into small cubes. It will melt in seamlessly.
This recipe is one of the most beloved Thanksgiving Turkey Pasta transformations out there, sometimes called a Turketti Casserole or simply Turkey Linguine. If you have leftover roasted turkey sitting in the fridge after the holidays and are wondering what to make with leftover turkey linguine-style, this is your answer.
Swap the chicken for the same amount of shredded turkey, dark or white meat or a mix of both, and follow the recipe exactly as written. The deeper, richer flavor of roasted turkey actually makes the sauce taste even better. The Taste of Home Turkey Tetrazzini tradition is real, and this recipe honors it.
For a creamy baked pasta casserole like this, a good heavy-bottomed skillet or Dutch oven is the difference between a sauce that simmers evenly and one that scorches in hot spots. Using a quality block of Parmesan you grate yourself, rather than pre-shredded, also gives the sauce a noticeably smoother texture since fresh-grated cheese melts without the anti-caking coatings.
This recipe is wonderfully adaptable. A few ideas to make it work for your kitchen:
Storage Note: This casserole freezes beautifully before baking, making it an incredible meal prep option for the holiday season or busy weeks ahead.
Ready to make the creamiest, cheesiest pasta casserole of your life? Here is the full step-by-step recipe:

This Chicken Tetrazzini is the ultimate creamy, cheesy pasta casserole that transforms simple ingredients into pure comfort food. Perfect for weeknight dinners, potlucks, or using up leftover turkey or chicken.
Preheat your oven to 375 degrees F (190 degrees C). Lightly grease a 9x13-inch baking dish with butter or nonstick spray and set aside.
Bring a large pot of salted water to a boil. Cook the spaghetti or linguine 2 minutes less than the package directions (it will finish cooking in the oven). Drain well and set aside.
In a large, deep oven-safe skillet or Dutch oven, melt 2 tablespoons of butter over medium-high heat. Add the sliced mushrooms in a single layer and cook undisturbed for 3 minutes, then stir and cook another 2 minutes until golden. Transfer to a plate.
In the same skillet, melt the remaining 2 tablespoons of butter over medium heat. Add the diced onion and cook for 4 to 5 minutes until softened. Add the garlic and cook for 1 minute more until fragrant.
Sprinkle the flour over the onion mixture and stir constantly for 1 to 2 minutes to cook out the raw flour taste.
If using, pour in the white wine and stir to deglaze the pan, scraping up any browned bits. Let it cook for 1 minute. Then slowly whisk in the chicken broth, milk, and heavy cream. Bring to a gentle simmer, whisking frequently, and cook for 4 to 5 minutes until the sauce thickens enough to coat the back of a spoon.
Reduce the heat to low. Add the softened cream cheese and stir until fully melted and incorporated. Stir in 1 cup of mozzarella, 0.25 cup of Parmesan, Italian seasoning, garlic powder, salt, and pepper.
Add the cooked pasta, shredded chicken, sauteed mushrooms, and frozen peas to the sauce. Toss gently until everything is well coated.
Transfer the mixture to the prepared baking dish if you used a skillet. Spread it evenly. Sprinkle the remaining mozzarella, remaining Parmesan, and the panko breadcrumbs evenly over the top.
Bake uncovered for 20 to 25 minutes until the top is golden and bubbly and the edges are starting to crisp. If you want extra browning, switch the oven to broil for the final 2 to 3 minutes, watching closely.
Remove from the oven and let rest for 5 minutes before serving. Garnish generously with fresh chopped parsley and serve hot.
Chicken Tetrazzini is a full meal on its own, but a few simple sides really round it out:
For a dinner party, you can assemble this entirely the day before, slide it in the oven an hour before guests arrive, and spend the rest of your time actually enjoying the evening. That is the quiet magic of a great casserole.