Classic Turkey Tetrazzini Casserole with Creamy Parmesan Sauce

My family’s favorite Turkey Tetrazzini, made with linguine or spaghetti, fresh mushrooms, and peas in a rich Parmesan cream sauce with a buttery breadcrumb topping. This baked pasta is an excellent way to use leftover Thanksgiving turkey and freezes well for cozy weeknight dinners.

Why You’ll Love This Turkey Tetrazzini Recipe

Thanksgiving dinner is wonderful, but the same turkey plate gets old after a day or two. I love sandwiches and soups for quick lunches, but when the weekend arrives and I want something warm and comforting, this Turkey Tetrazzini is my go-to.

Here’s why my family returns to this casserole year after year:

1. It transforms leftover turkey into a dish that tastes nothing like the holiday meal.
2. It’s flexible—use roasted chicken, ham, or different vegetables if needed. The recipe adapts well to swaps.
3. It freezes beautifully, making it a convenient make-ahead meal for busy, cold evenings.

What is Tetrazzini?

Tetrazzini is an American baked pasta dish with a Parmesan cream sauce, often finished with wine or sherry and mushrooms. The protein varies: turkey or chicken are common, and seafood versions use shrimp, tuna, or salmon.

The dish was likely named for Italian soprano Luisa Tetrazzini in the early 20th century and gained popularity in hotel and restaurant kitchens across the U.S. Modern versions are usually baked with a crunchy topping of breadcrumbs or nuts, though stovetop versions exist as well.

Ingredients You’ll Need

• Dry spaghetti or linguine. Fettuccine works, but avoid angel hair (too delicate) or bucatini (too heavy).
• Cooked turkey breast, shredded. Shredding creates a better texture with the pasta; dark meat can be added but keep breast as the primary protein.
• Fresh mushrooms, sliced. Cremini (baby bella) add deeper flavor than white buttons.
• Yellow onion or shallot, and garlic. These aromatics form the sauce base.
• Unsalted butter. For sautéing and the breadcrumb topping.
• All-purpose flour. To thicken the sauce.
• Chicken stock or broth. Provides savory depth; this sauce sits between a velouté and a béchamel, combining stock and dairy.
• Whole milk and heavy cream. For a rich, silky sauce.
• Dry sherry (or dry white wine) for a subtle sweet-nutty note; optional.
• Ground nutmeg. A pinch adds warmth to white sauces.
• Grated Parmigiano-Reggiano. For savory, nutty flavor in the sauce and topping.
• Frozen peas. No need to thaw; they’ll heat through during baking.
• Fresh herbs. Thyme for the mushrooms and parsley for brightness.
• Panko breadcrumbs. For a crisp topping.
• Kosher salt and freshly ground black pepper.

How to Make Turkey Tetrazzini

This recipe is simple but involves a few components: pasta, a sautéed mushroom mix, a creamy sauce, and the breadcrumb topping. The steps are straightforward and the result is worth the effort.

Cook the Pasta

While you make the sauce, cook the pasta in salted water until just al dente. For easier serving from the casserole, snap long pasta in half before cooking.

Make the Sauce

Sauté the mushrooms in butter with a little salt and pepper until they release their liquid and it evaporates. Add the chopped onion or shallot and cook until the mushrooms begin to brown. Stir in garlic and thyme for the final minute, then remove the mixture and set it aside.

In the same pot, melt more butter, whisk in the flour, and cook briefly to form a roux. Gradually whisk in chicken stock, milk, cream, and sherry. Season with nutmeg, salt, and pepper. Cook until the sauce is glossy and coats the back of a spoon, about five minutes, then whisk in grated Parmigiano-Reggiano until smooth.

Assemble, Bake, and Serve

Off the heat, fold the shredded turkey, sautéed mushrooms, frozen peas, parsley, and cooked pasta into the sauce. Taste and adjust seasoning. Transfer the mixture to a buttered 13×9 (4.8-qt) baking dish.

For the topping, mix melted butter with Panko, remaining Parmesan, and black pepper. Spread evenly over the casserole. Bake at 400°F for about 25 minutes, until the sauce bubbles and the topping is golden. If the crumbs brown too quickly, tent the dish with foil for the final minutes.

Let the Tetrazzini rest a few minutes before serving; the sauce will thicken as it cools. Because it’s rich, I usually serve it with simple bread or a light salad.

Tips for Making the Best Turkey Tetrazzini

• Don’t overcook the pasta. Boil to just al dente so it holds up during baking.
• Embrace a saucy bake. The casserole will thicken as it bakes and cools; a slightly saucy mix before baking ensures a creamy finished dish.
• Season to taste. Store-bought stocks vary in saltiness. The recipe provides conservative salt amounts, so adjust before baking.

Recipe FAQs

Q. Can I use other proteins?

A. Yes. Rotisserie chicken or leftover roasted chicken are ideal substitutes. Diced ham works well too. Seafood versions with tuna, salmon, or shrimp are traditional alternatives. Red meat is not typical for Tetrazzini.

Q. Can I make this gluten- or dairy-free?

A. This specific recipe wasn’t tested for gluten- or dairy-free substitutions. For dietary restrictions, consult a recipe developed for those needs to ensure reliable results.

Q. Can I freeze Turkey Tetrazzini?

A. Yes. Assemble the casserole in a freezer-safe dish, omit the Panko topping, wrap tightly, and freeze unbaked. Defrost in the refrigerator overnight, add the fresh breadcrumb topping, and bake as directed. Portioned servings also freeze well.