Description

This Creamy Chicken Tetrazzini Pasta Bake with Mushrooms is a comforting, crowd-pleasing casserole that pairs tender shredded chicken and sautéed mushrooms with a silky Parmesan cream sauce, tossed with spaghetti and finished under a golden breadcrumb topping. It’s an ideal dish for family dinners, potlucks, or anytime you want a satisfying baked pasta that is easy to prepare and full of flavor.

Ingredients

Gather the following ingredients before you start. Quantities serve approximately 4–6 people.

• 12 oz spaghetti — cooked according to package instructions
• 2 cups cooked, shredded chicken — rotisserie or leftover chicken works well
• 1 cup sliced mushrooms — button or cremini
• 1/4 cup butter — unsalted recommended
• 1/4 cup all-purpose flour — for thickening the sauce
• 2 cups chicken broth — low-sodium if preferred
• 1 cup heavy cream — for a rich sauce
• 1 cup grated Parmesan cheese — freshly grated for best flavor
• 1/2 teaspoon garlic powder
• 1/2 teaspoon onion powder
• Salt and pepper — to taste
• 1/4 cup breadcrumbs — for the topping
• 2 tablespoons olive oil — to mix with breadcrumbs

Optional substitutions

• Use gluten-free pasta and gluten-free flour/breadcrumbs for a gluten-free version.
• For a lighter sauce, replace half the heavy cream with milk.
• To make this vegetarian, swap chicken for firm tofu or a mix of roasted vegetables such as zucchini and bell peppers.

Instructions

Step 1: Preheat the oven

Preheat the oven to 350°F (175°C) so the bake heats through evenly and the breadcrumb topping becomes crisp and golden.

Step 2: Cook the spaghetti

Cook the pasta according to the package directions until just shy of al dente. Drain and set aside while you prepare the sauce.

Step 3: Sauté the mushrooms

Melt the butter in a large skillet over medium heat. Add the sliced mushrooms and sauté for about 5 minutes, or until they release their moisture and begin to brown. This develops a deeper, earthy flavor in the finished dish.

Step 4: Make the creamy sauce

Sprinkle the flour over the mushrooms and stir for about a minute to remove the raw flour taste. Gradually whisk in the chicken broth and heavy cream, ensuring the mixture is smooth. Continue whisking until the sauce thickens, about 3–5 minutes.

Step 5: Add seasoning and cheese

Stir in the grated Parmesan, garlic powder, onion powder, and season with salt and pepper to taste. Allow the cheese to melt fully into the sauce, creating a creamy base.

Step 6: Combine pasta, chicken, and sauce

Add the cooked spaghetti and shredded chicken to the pan. Toss gently until everything is evenly coated with the sauce.

Step 7: Transfer to a baking dish

Lightly grease a 9×13-inch baking dish with olive oil or butter. Transfer the pasta mixture into the dish and spread it out evenly.

Step 8: Prepare the breadcrumb topping

Combine the breadcrumbs with the olive oil in a small bowl until evenly moistened. Sprinkle the mixture evenly over the top of the pasta.

Step 9: Bake

Bake for 25–30 minutes, or until the top is golden brown and the edges are bubbling. Remove from the oven and let the dish rest for a few minutes before serving so it sets up and slices cleanly.

Notes and tips

• Use freshly grated Parmesan for the best texture and flavor; pre-grated varieties can be drier and less flavorful.
• If you want a richer sauce, substitute a portion of the chicken broth with extra heavy cream.
• A splash of dry white wine added to the skillet after sautéing the mushrooms (and before adding the flour) brightens the sauce—allow it to reduce slightly first.
• Add fresh herbs such as thyme or rosemary while sautéing mushrooms for an aromatic boost.
• Undercook the pasta by 1–2 minutes so it finishes cooking in the oven without becoming mushy.

Serving suggestions

This pasta bake is hearty on its own, but these sides complement it nicely:

• A crisp garden salad with a lemon vinaigrette to cut the richness.
• Garlic bread or a crusty loaf for soaking up the creamy sauce.
• A light white wine such as Pinot Grigio or Sauvignon Blanc pairs well with the creamy texture and mushroom flavors.

Nutritional information (per serving)

• Calories: 480
• Fat: 26g
• Carbohydrates: 38g
• Protein: 22g
• Fiber: 2g
• Sugars: 2g

Values are approximate and will vary depending on specific ingredients and portion sizes.

Storage and reheating

Store leftovers in an airtight container or cover the baking dish with foil. Refrigerate for up to 3 days. To reheat, microwave individual portions until hot or bake in a 350°F (175°C) oven for 10–15 minutes until warmed through. If frozen, assemble without baking, cover tightly, and freeze for up to 3 months. Thaw overnight in the refrigerator before baking.

Frequently Asked Questions

Can I use a different type of pasta?

Yes. While spaghetti is traditional, fettuccine, linguine, or short shapes like penne or rigatoni all work well and offer different textures.

Can I prepare this ahead of time?

Absolutely. You can assemble the dish up to the baking step and refrigerate. When ready, bake and add 5–10 minutes to the baking time if chilled.

Can I freeze this dish?

Yes. Assemble but do not bake, then cover tightly with foil and freeze for up to 3 months. Thaw in the fridge overnight before baking.

Can I substitute the chicken with another protein?

Yes. Turkey, ham, or shrimp can be used in place of chicken for variety.

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Conclusion

This Creamy Chicken Tetrazzini Pasta Bake with Mushrooms is a versatile, comforting casserole that’s simple to prepare and easy to adapt. Whether you need a reliable weeknight dinner or something to feed a crowd, this recipe delivers creamy, savory satisfaction. Try it as written or customize with your favorite vegetables and proteins—either way, it’s sure to become a family favorite.