Chicken Tetrazzini

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I’ve been making this creamy, cheesy chicken tetrazzini for years whenever I need a comforting, hands-off dinner that feeds a crowd. It layers shredded chicken and spaghetti in a velvety mushroom-and-chicken-soup sauce, then bakes until bubbly and golden — the kind of casserole that travels well to potlucks and always gets seconds. If you want a slightly different weeknight shortcut, I’ve also tested a quicker version that trims a few steps for busier nights without sacrificing creaminess.

Why you’ll love this dish

This Chicken Tetrazzini is the ultimate comfort-food casserole: budget-friendly, forgiving, and perfect for feeding kids and adults alike. It’s built from pantry staples (canned soups, pasta, shredded cheese) so you can pull it together on short notice, yet it still tastes rich and homemade thanks to the added cream, broth, and sour cream. Make it for weeknight family dinners, potlucks, or a cozy Sunday supper — it reheats beautifully, too.

"Absolute crowd-pleaser — creamy, cheesy, and leftovers were even better the next day." — a reader’s note after trying this exact casserole

How this recipe comes together

Step-by-step overview to set expectations:

• Boil salted water and cook spaghetti until al dente, then cool to stop cooking.
• Whisk together canned soups, broth, heavy cream, and sour cream to make a rich base.
• Fold in shredded chicken, spices, and cooked pasta; loosen with reserved pasta water if needed.
• Layer half the mixture in a greased 9×13 dish, sprinkle with cheeses, top with remaining pasta and more cheese.
• Bake at 350°F until hot and bubbly, then rest briefly before serving.

This quick outline helps you manage timing: start the pasta last if you want everything to finish closer together, or make the sauce ahead and assemble when guests arrive.

What you’ll need

Ingredient list

• 3 cups cooked chicken, chopped or shredded (rotisserie chicken works great)
• 1 lb (16 oz) spaghetti
• 1 (10.75 oz) can condensed cream of mushroom soup
• 1 (10.75 oz) can condensed cream of chicken soup
• 1 1/2 cups chicken broth
• 1/2 cup heavy cream
• 1 1/2 cups sour cream
• 2 cups shredded mozzarella cheese
• 1 cup shredded cheddar cheese
• 1 tsp garlic powder
• 1 tsp onion powder
• 1/2 tsp Italian seasoning
• Salt and freshly ground black pepper to taste

Substitutions and notes:

• Swap rotisserie or leftover roast chicken as needed.
• Use half-and-half instead of heavy cream for a lighter sauce, or Greek yogurt in place of some sour cream for tang and protein.
• For a gluten-free version, substitute rice pasta or a short gluten-free noodle.
  For a different ratio of cheese or a turkey swap, see another variation I tested with helpful notes on swapping proteins and cheeses.

How to prepare it

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Step-by-step directions (clear, short sentences):

1. Preheat your oven to 350°F. Grease a 9×13-inch casserole dish with olive oil or nonstick spray and set aside.
2. Bring a large pot of salted water to a boil. Add the spaghetti and cook about 12 minutes, or until al dente. Reserve 1 cup of the pasta water, then drain and rinse the pasta under cold water to stop the cooking and prevent sticking.
3. In a large mixing bowl, whisk together the cream of mushroom soup, cream of chicken soup, chicken broth, heavy cream, and sour cream until smooth.
4. Add the garlic powder, onion powder, Italian seasoning, a generous pinch of salt, black pepper, and the chopped or shredded chicken. Stir until evenly combined.
5. Add the cooled pasta to the sauce. Toss gently so the noodles are fully coated. If the mixture looks dry, stir in a few tablespoons of the reserved pasta water until you reach a saucy consistency.
6. Transfer half of the chicken-and-pasta mixture to the prepared baking dish. Sprinkle 1 cup of mozzarella and 1/2 cup of cheddar evenly over the layer.
7. Spoon the remaining chicken-pasta mixture on top, then finish with the remaining 1 cup mozzarella and 1/2 cup cheddar.
8. Bake uncovered for 35–45 minutes, until the casserole is hot and bubbling and the cheese has melted and started to turn golden.
9. Let the dish rest for 5 minutes before sprinkling with chopped fresh parsley and serving.

Timing tip: if your chicken is cold from the fridge, allow it to come closer to room temperature or warm it briefly so it doesn’t cool the casserole and lengthen baking time.

How to plate and pair

Best ways to enjoy it:

• Serve slices scooped onto warm plates and garnish with fresh parsley or a squeeze of lemon to cut the richness.
• Classic pairings: garlic bread or toasted baguette, steamed green beans, or a crisp mixed-green salad dressed with a bright vinaigrette.
• For a heartier meal, add a side of roasted Brussels sprouts or a simple tomato-cucumber salad. The creamy tetrazzini pairs well with acidic or crunchy sides to balance the texture.

How to store & freeze

Storage and reheating tips:

• Refrigerate leftovers in an airtight container for up to 3–4 days. Reheat individual portions in the microwave (2–3 minutes, stirring halfway) or warm in a 350°F oven until heated through.
• To freeze: cool completely, then cover the assembled casserole tightly with plastic wrap and foil, or portion into freezer-safe containers. Freeze up to 3 months. Thaw overnight in the fridge before reheating and bake covered at 350°F until hot, uncovering the last 10 minutes to re-brown the top.
• Food safety: keep hot foods above 140°F and refrigerate within 2 hours of cooking. When reheating, bring to 165°F internal temperature.

Pro chef tips

Helpful cooking tips to improve texture and flavor:

• Don’t overcook the pasta. Aim for al dente since it will finish in the oven.
• Reserve pasta water — the starchy liquid helps loosen the sauce and helps it cling to the noodles.
• Shred your own mozzarella block for better melting and less greasy results than pre-shredded cheese.
• For a browned top, switch the oven to broil for 1–2 minutes at the end — watch closely to avoid burning.
• Make it ahead: assemble the casserole, cover, and refrigerate up to 24 hours before baking. Add an extra 5–10 minutes to the bake time if baking straight from the fridge.
  If you’re curious about a smoky, bold spin or want inspiration for spicing it up, check out this alternate take that experiments with smoky and spicy flavors.

Creative twists

Recipe variations to try:

• Mushroom-forward: sauté 8 oz sliced mushrooms with a little butter and shallot, then fold into the sauce for real mushroom flavor.
• Veggie-loaded: stir in thawed frozen peas, chopped spinach, or sautéed bell peppers for color and nutrition.
• Crunch-top: mix panko breadcrumbs with melted butter and grated Parmesan, sprinkle on top during the last 10 minutes of baking for a crispy finish.
• Low-carb: swap spaghetti for spiralized zucchini or shirataki noodles and reduce cream for a lighter sauce.

FAQ

Common questions answered
Q: Can I use rotisserie chicken?
A: Yes — rotisserie chicken is ideal and saves time. Use about 3 cups shredded or chopped.

Q: Can I skip the condensed soups and make the sauce from scratch?
A: Absolutely. Substitute with a homemade white sauce: melt 4 tbsp butter, whisk in 4 tbsp flour, slowly add 1 1/2 cups chicken broth and 1/2–3/4 cup cream until thickened, then fold in 1 cup sour cream and seasonings.

Q: How can I make this vegetarian?
A: Replace chicken with sautéed mushrooms and artichoke hearts, use vegetable broth, and swap the cream of chicken soup for an additional can of mushroom soup or a homemade béchamel.

Q: Is this freezer-friendly?
A: Yes — see the storage section above. Freeze before or after baking (I prefer before for easier reheating).

Conclusion

If you want another homey take on the classic, check out Belly Full’s easy chicken tetrazzini for a straightforward version. For a step-by-step demo and video guidance, Natasha’s Kitchen offers a helpful walkthrough. If you’re after a richer, tested family favorite, take a look at The Pioneer Woman’s best chicken tetrazzini. And if you want to experiment with heat and smoke, this spicy smoked chicken tetrazzini gives ideas for bolder flavors. Enjoy experimenting — this casserole is forgiving, and little tweaks will make it your go-to comfort meal.