The Best Chicken Tetrazzini Casserole for Cozy Dinners

Chicken tetrazzini casserole is everything you want in a comforting, family-friendly dinner: creamy, cheesy, and packed with tender shredded chicken. Twirl-worthy pasta is tossed in a luscious cream sauce made with mushrooms, garlic, cream cheese, and a touch of Italian seasoning. Topped with golden, bubbly mozzarella and parmesan, this casserole is baked to perfection—you’ll be pulling out forks before it even hits the table.

This easy chicken tetrazzini recipe is inspired by the classic Italian-American dish but streamlined for busy weeknights. Growing up, my mom made a version of chicken tetrazzini using leftover chicken and pantry staples, and I’ve elevated it with extra creaminess and a little chicken broth for depth of flavor. Trust me, this is one you’ll add to your regular rotation!

Why This Chicken Tetrazzini Casserole Is So Irresistible

• Super creamy sauce thanks to a combination of cream cheese, half and half, and mozzarella cheese.
• A satisfying balance of textures—al dente pasta, tender chicken, and gooey, golden cheese.
• Perfect for meal prep or leftovers: this reheats beautifully for busy weeknights.
• Flexible ingredients—easily swap veggies or use leftover turkey.
• You only need an hour from start to finish, making it ideal for a quick chicken tetrazzini dinner.

Essential Ingredients for Perfect Chicken Tetrazzini Casserole

Let’s get into a few of the star ingredients that make this homemade chicken tetrazzini recipe so special:

• Cooked shredded chicken: Rotisserie chicken works perfectly here, but you can also use baked or poached chicken breasts. Leftover turkey is another great option.
• Cream cheese: This adds an extra creamy and tangy note that sets this casserole apart. Make sure it’s softened to mix in easily.
• Mushrooms: Freshly sliced mushrooms bring umami flavor to the dish. If you’re not a fan, you could substitute broccoli or even cooked spinach.
• Pasta: Spaghetti or linguine are great choices here, but you can swap in fettuccine or egg noodles if you prefer.

Chicken Tetrazzini Casserole Recipe Details

• Servings: 8
• Prep Time: 20 minutes
• Cook Time: 40 minutes
• Total Time: 1 hour

Chicken Tetrazzini Casserole Ingredients

• 12 ounces spaghetti or linguine
• 2 cups cooked shredded chicken
• ½ cup frozen peas, thawed (optional)
• 2 cups shredded mozzarella cheese, divided
• ¼ cup shredded Parmesan cheese
• 3 tablespoons butter
• 1 small yellow onion, diced
• ½ pound mushrooms, sliced
• 4 tablespoons all-purpose flour
• 1 ⅓ cups reduced sodium chicken broth
• ½ cup extra chicken broth
• 1 ⅓ cups half and half, light cream, or whole milk
• 1 teaspoon Italian seasoning
• 1 teaspoon garlic powder
• 8 ounces cream cheese, cubed

How to Make Chicken Tetrazzini Casserole

1. Preheat your oven to 350°F.
2. Cook spaghetti or linguine to al dente according to the package instructions. Drain and set aside.
3. In a large saucepan, melt the butter over medium heat. Add the diced onion and cook until softened, about 3-4 minutes.
4. Add the sliced mushrooms and cook for 5 minutes, stirring occasionally, until softened and slightly browned.
5. Sprinkle the flour over the vegetables and cook for 1 minute, stirring continuously.
6. Slowly whisk in the chicken broth until smooth. Add the half and half, cream cheese, Italian seasoning, and garlic powder. Stir constantly over medium heat until the mixture begins to boil and thickens.
7. Remove the sauce from the heat and stir in 1 cup of the shredded mozzarella cheese until melted.
8. In a large mixing bowl, combine the cooked pasta, sauce, chicken, and thawed peas (if using).
9. Transfer the mixture to a greased 2-quart casserole dish. Cover with aluminum foil and bake for 20 minutes.
10. Uncover the casserole, sprinkle with the remaining mozzarella cheese and Parmesan cheese, and bake for another 10-15 minutes, until the cheese is bubbly and golden.
11. Let the casserole rest for 5 minutes before serving.

Expert Tips for the Best Chicken Tetrazzini Casserole

• Don’t overcook your pasta—al dente is best since it’ll continue cooking in the oven.
• Use room-temperature cream cheese for smoother blending into the sauce.
• For extra flavor, add a pinch of nutmeg or a dash of hot sauce to the cream sauce.
• If you prefer a crunchier topping, sprinkle breadcrumbs mixed with melted butter over the cheese before baking.
• This dish tastes even better the next day! Store leftovers in an airtight container in the fridge for up to 4 days. Reheat in the oven for the best texture.

Creative Ways to Customize This Easy Chicken Tetrazzini Recipe

• Vegetarian: Omit the chicken and double up on vegetables like broccoli or roasted red peppers.
• Seafood twist: Swap chicken for shrimp or crab for a luxurious spin on the classic.
• Spicy kick: Stir in diced jalapeños or a pinch of red pepper flakes to the sauce.
• Gluten-free: Use your favorite gluten-free pasta and a gluten-free flour blend for the roux.

Chicken Tetrazzini Casserole FAQs

Can I make chicken tetrazzini casserole ahead of time?

Yes! Assemble the casserole up to the point of baking, cover it tightly with foil, and refrigerate for up to 24 hours. When ready to bake, add an extra 10 minutes to the covered baking time since it’ll be cold.

What’s the best pasta for this recipe?

I recommend using spaghetti or linguine for the traditional texture, but fettuccine or even penne work well too!

Can I freeze chicken tetrazzini casserole?

Absolutely. Freeze the unbaked casserole tightly wrapped for up to 3 months. Thaw overnight in the refrigerator before baking as usual.

How do I avoid a watery casserole?

Make sure to cook the mushroom and onion mixture thoroughly to release any water. Also, be sure to drain your pasta well before mixing in.

 

This crowd-pleasing chicken tetrazzini casserole is guaranteed to become a family favorite, whether you’re serving it on a busy weeknight or making it ahead for guests. Have you tried it yet? Let me know your favorite twists or tips in the comments below—I’d love to hear from you!