Why You’ll Love This Recipe

• Perfect for using leftover cooked chicken or turkey.
• Features a rich, creamy, and flavorful cheese sauce made completely from scratch.
• A freezer-friendly meal, perfect for meal prep or batch cooking.
• A complete one-dish dinner that is satisfying and family-friendly.
• Customizable with different cheeses, vegetables, and pasta shapes.

Equipment You’ll Need

• 9×13 inch baking dish
• Large pot (for cooking pasta)
• Colander
• Large skillet or Dutch oven
• Whisk
• Chef’s knife
• Cutting board
• Measuring cups and spoons

Ingredients

• 1 pound linguine or spaghetti
• 4 tablespoons unsalted butter
• 8 ounces cremini mushrooms, sliced
• 1 medium yellow onion, finely chopped
• 3 cloves garlic, minced
• 1/4 cup all-purpose flour
• 2 cups low-sodium chicken broth, warmed
• 1.5 cups whole milk or half-and-half, warmed
• 1/2 cup dry white wine, such as Sauvignon Blanc or Pinot Grigio (optional, can substitute with more chicken broth)
• 1/2 cup grated Parmesan cheese, plus more for topping
• 1 cup shredded sharp cheddar cheese
• 1 cup shredded mozzarella or Gruyère cheese
• 1/2 teaspoon salt, or to taste
• 1/4 teaspoon black pepper, freshly ground
• Pinch of nutmeg
• 4 cups cooked chicken, shredded or cubed (from a rotisserie chicken or leftovers)
• 1/4 cup fresh parsley, chopped, for garnish

Instructions

1. Preheat your oven to 375°F (190°C). Lightly grease a 9×13 inch baking dish.
2. Cook the pasta in a large pot of generously salted boiling water according to package directions, but cook it for 2 minutes less than the al dente time. The pasta will finish cooking in the oven. Drain well and set aside.
3. While the pasta is cooking, prepare the sauce. Melt the butter in a large skillet or Dutch oven over medium-high heat. Add the sliced mushrooms and cook, stirring occasionally, until they have released their liquid and are nicely browned, about 5-7 minutes. Add the chopped onion and cook until softened, about 4-5 minutes. Stir in the minced garlic and cook for another minute until fragrant.
4. Sprinkle the flour over the vegetables and stir constantly for 1-2 minutes to cook out the raw flour taste. This forms a roux which will thicken the sauce.
5. If using wine, pour it in and stir, scraping up any browned bits from the bottom of the pan. Let it bubble and reduce by about half.
6. Gradually whisk in the warmed chicken broth, followed by the warmed milk or half-and-half. Whisk continuously to prevent lumps until the sauce is smooth. Bring the mixture to a simmer, and let it cook for 2-3 minutes, stirring, until it has thickened enough to coat the back of a spoon.
7. Remove the skillet from the heat. Stir in the 1/2 cup of Parmesan cheese, the shredded cheddar, and the shredded mozzarella until completely melted and the sauce is smooth. Season with salt, pepper, and a pinch of nutmeg. Taste and adjust seasoning as needed.
8. In a large bowl, combine the undercooked pasta, the shredded chicken, and the cheese sauce. Toss everything together until the pasta and chicken are evenly coated.
9. Pour the mixture into the prepared baking dish and spread it into an even layer. Sprinkle the top with additional Parmesan cheese.
10. Bake, uncovered, for 25-30 minutes, or until the sauce is bubbly and the top is golden brown.
11. Remove from the oven and let the tetrazzini rest for 10 minutes before serving. This allows the sauce to set slightly, making it easier to serve. Garnish with fresh chopped parsley before serving.

Expert Cooking Tips

• Undercook the Pasta: It’s crucial to cook the pasta slightly less than al dente, as it will continue to absorb liquid and cook in the oven. This prevents a mushy final dish.
• Use Warmed Liquids: Warming the broth and milk before adding them to the roux helps prevent lumps and creates a smoother, more stable sauce.
• Shred Your Own Cheese: Pre-shredded cheeses are often coated with anti-caking agents that can prevent them from melting smoothly, resulting in a grainy sauce. For the creamiest texture, buy blocks of cheese and shred them yourself.
• Brown the Mushrooms Properly: Don’t overcrowd the pan when cooking the mushrooms. Allowing them to get deeply browned develops a rich, umami flavor that is essential to the dish.

Substitutions and Variations

For the chicken, feel free to use leftover turkey, which is the traditional choice after Thanksgiving. For a vegetarian version, omit the chicken, double the mushrooms (using a mix of varieties like shiitake and oyster is nice), and substitute vegetable broth for the chicken broth. Different pasta shapes like penne, fettuccine, or egg noodles work well. You can swap the cheeses based on your preference; provolone, fontina, or a Monterey Jack blend are all excellent choices.

Common Mistakes to Avoid

The most common mistake is creating a grainy or broken sauce. This usually happens if the dairy is added when the pan is too hot or if it’s boiled too vigorously. To avoid this, remove the pan from the heat before stirring in the cheese and use warmed milk. Another pitfall is a dry casserole. Ensure your sauce is plentiful and not overly thick before mixing with the pasta, as the pasta will absorb a significant amount of liquid during baking. Finally, avoid overcooking the pasta initially; mushy tetrazzini is a result of pasta that was already fully cooked before it went into the oven.

Serving Suggestions

Chicken Tetrazzini is a rich, all-in-one meal, so it pairs best with simple, fresh side dishes that provide a contrast in flavor and texture. A crisp green salad with a bright lemon vinaigrette is a perfect accompaniment to cut through the richness. Other great options include steamed or roasted green beans, asparagus, or broccoli. For a truly hearty meal, serve with a side of warm garlic bread for dipping into the creamy sauce.

Storage and Reheating Tips

Leftovers can be stored in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave or place the entire baking dish, covered with foil, in a 350°F (175°C) oven until warmed through. For longer storage, this dish freezes beautifully. You can freeze the entire unbaked casserole by covering it tightly with a layer of plastic wrap and then a layer of aluminum foil. It can be frozen for up to 3 months. Bake from frozen, adding about 20-30 minutes to the original baking time, or thaw in the refrigerator overnight before baking as directed.

Frequently Asked Questions

Can I make Chicken Tetrazzini ahead of time?

Yes, absolutely. You can assemble the entire casserole, cover it, and refrigerate it for up to 2 days before baking. You may need to add 10-15 minutes to the baking time since it will be starting from cold.

What is the best kind of chicken to use?

Leftover roasted or rotisserie chicken is ideal because it’s already seasoned and tender. However, you can also use poached or pan-seared chicken breasts or thighs. The key is to have cooked, tender chicken ready to be added to the sauce.

My sauce seems thin. Will it thicken up?

The sauce should be thick enough to coat a spoon but still pourable. It will thicken considerably as it bakes and as the pasta absorbs some of the liquid. If it seems excessively thin, you can simmer it on the stove for a few more minutes before combining it with the other ingredients.

Can I make this recipe gluten-free?

Yes, you can make this gluten-free by using your favorite gluten-free pasta and substituting a gluten-free all-purpose flour blend for the regular flour in the roux.

Conclusion

This Cheesy Chicken Tetrazzini recipe is more than just a clever way to use leftovers; it’s a culinary hug in a dish. It delivers on every promise of a great comfort food: it’s creamy, cheesy, hearty, and deeply satisfying. By making the sauce from scratch, you control the ingredients and elevate the flavor far beyond what any canned soup could achieve. Whether you’re feeding a family, hosting a casual get-together, or stocking your freezer for a busy day, this dish is a reliable and delicious solution. We encourage you to embrace this classic and make it a staple in your cooking repertoire.