Easy Chicken Tetrazzini

This Easy Chicken Tetrazzini is a creamy, comforting pasta bake that brings together tender chicken, spaghetti, and a rich, cheesy sauce in one satisfying dish. It’s a perfect weeknight dinner or make-ahead casserole that I love to serve when I want something hearty but simple. With its golden baked top and velvety interior, it always disappears fast at the table.

Why You’ll Love This Recipe

I love this recipe because it’s the perfect way to use up leftover chicken and pantry staples. It feels like comfort food but doesn’t require a ton of steps or fancy ingredients. The combination of pasta, creamy sauce, and melted cheese makes every bite feel indulgent. It’s also great for meal prep or feeding a crowd without stress.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

• Cooked chicken breast, shredded or chopped

• Spaghetti or linguine

• Butter

• Onion, finely chopped

• Garlic, minced

• Sliced mushrooms (optional)

• All-purpose flour

• Chicken broth

• Milk or half-and-half

• Sour cream

• Shredded mozzarella or Monterey Jack cheese

• Grated Parmesan cheese

• Salt and black pepper

• Dried parsley or Italian seasoning

Directions

1. I preheat the oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish.

2. I cook the pasta just until al dente, then drain and set it aside.

3. In a large skillet, I melt butter and sauté the onion and garlic until soft. If using mushrooms, I add them and cook until tender.

4. I stir in the flour and cook for a minute, then whisk in chicken broth and milk until smooth and thickened.

5. I reduce the heat and stir in sour cream, half the cheese, and season with salt, pepper, and herbs.

6. I fold in the cooked chicken and pasta, mixing everything together until coated.

7. I pour the mixture into the baking dish and sprinkle the remaining cheese and Parmesan over the top.

8. I bake uncovered for 25–30 minutes, or until hot and bubbly with a golden cheese crust.

9. I let it rest for a few minutes before serving.

Servings and timing

This recipe makes about 6 servings and takes approximately 45 minutes total—15 minutes to prep and 30 minutes to bake. It’s a great dish for busy nights or for making ahead and baking later.

Variations

• I sometimes use rotisserie chicken or turkey for convenience.

• For a veggie boost, I add peas, spinach, or chopped broccoli to the sauce before baking.

• When I want a richer flavor, I use cream instead of milk or add a splash of white wine to the sauce.

• I like to top it with buttery breadcrumbs for a bit of crunch on top.

storage/reheating

I store leftovers in an airtight container in the fridge for up to 4 days. To reheat, I cover it and warm it in the oven at 325°F until heated through, or I microwave portions with a splash of milk to keep the sauce creamy. It also freezes well—I wrap it tightly before baking and thaw overnight before reheating.

FAQs

Can I use a different type of pasta?

Yes, I’ve used fettuccine, penne, and egg noodles with great results. I just make sure not to overcook the pasta before baking.

Can I make this dish ahead of time?

Absolutely. I often assemble it a day in advance, cover it, and refrigerate it until I’m ready to bake. It might need an extra 5–10 minutes in the oven.

How can I make it more flavorful?

I like to add garlic powder, onion powder, or a pinch of red pepper flakes for more depth. A little grated nutmeg also adds a nice touch to the creamy sauce.

Is this freezer-friendly?

Yes, I freeze it before baking by wrapping the entire dish tightly in plastic and foil. I thaw it overnight in the fridge and bake as usual when ready.

Can I skip the mushrooms?

Of course. I sometimes leave them out if I don’t have any or if someone in the family doesn’t like them—it’s just as delicious without.

Conclusion

This Easy Chicken Tetrazzini is my go-to comfort casserole—simple, satisfying, and always a crowd-pleaser. It’s the kind of meal I can rely on when I need something filling and fuss-free, with plenty of creamy, cheesy flavor in every bite. Whether I’m feeding my family or prepping ahead for busy days, this dish never lets me down.