Recipe for Chicken Tetrazzini

Chicken Tetrazzini is a comforting, creamy pasta casserole that brings together tender chicken, spaghetti, peas, and a luscious sauce baked to golden perfection. This classic American-Italian dish has stood the test of time, offering a cozy meal that’s perfect for family dinners or entertaining guests. Whether you’re craving something rich and satisfying or looking for a make-ahead dish that reheats beautifully, this Recipe for Chicken Tetrazzini ticks all the boxes.

Why This Recipe Works

This Recipe for Chicken Tetrazzini works because it balances creamy, savory flavors with tender textures, creating a harmonious dish that feels indulgent without being overwhelming. The sauce, made from scratch with butter, flour, chicken broth, and half and half, forms a velvety base enriched with Parmesan cheese and fresh thyme. The spaghetti absorbs just enough sauce to stay moist but not mushy, while the peas add a pop of color and sweetness. Toasted sandwich bread slices brushed with melted butter form a crispy topping that contrasts beautifully with the creamy casserole beneath. Plus, the option to add a touch of hot sauce ensures the dish can be tailored to your preferred spice level.

The Essentials

• 2 slices high-quality sandwich bread, lightly toasted (see note 1) – for the crunchy topping
• 2 tablespoons butter, melted – to brush on the bread and enrich the sauce
• Salt and freshly ground black pepper (see note 2) – for seasoning throughout
• 8 ounces spaghetti, broken in half (see note 3) – the pasta base
• 2 tablespoons butter – for sautéing aromatics and making the roux
• 1 medium onion, peeled and finely chopped – adds savory depth
• 2 cloves garlic, minced – for aromatic flavor
• 1 tablespoon minced fresh thyme – fresh herbaceous notes
• 2 tablespoons all-purpose flour – thickens the sauce
• 1 cup chicken broth – flavorful liquid base
• 1 cup half and half – for creamy richness
• 1/2 cup grated Parmesan cheese – adds umami and depth
• Hot sauce to taste, optional (see note 2) – for a spicy kick
• 2 cups cooked chicken, chopped or shredded (see note 4) – the star protein
• 1 cup frozen peas – sweet and colorful veggie addition

Before You Start: Equipment

• Large pot – for boiling pasta
• Large skillet or saucepan – to prepare sauce and sauté aromatics
• Baking dish (around 9×9 inches) – for assembling and baking the casserole
• Mixing spoon and whisk – for stirring sauce and mixing ingredients
• Measuring cups and spoons – for precise ingredient amounts
• Knife and cutting board – for chopping onion, garlic, and chicken

Recipe for Chicken Tetrazzini in Steps

Step 1: Prepare the Pasta and Bread

Start by bringing a large pot of salted water to a boil. Add the broken spaghetti and cook until al dente according to package instructions. Drain and set aside. Meanwhile, lightly toast the sandwich bread slices until golden and crisp. Once toasted, brush both sides with melted butter and season with a pinch of salt and pepper. Set aside for later use as the topping.

Step 2: Make the Sauce Base

In a large skillet or saucepan, melt 2 tablespoons of butter over medium heat. Add the finely chopped onion and sauté until translucent, about 4-5 minutes. Stir in the minced garlic and fresh thyme, cooking for another minute until fragrant.

Step 3: Create the Roux and Add Liquids

Sprinkle the flour over the onion mixture and whisk constantly for about 2 minutes to cook out the raw flour taste. Slowly pour in the chicken broth while whisking to avoid lumps. Then add the half and half, continuing to whisk until the sauce thickens and becomes creamy, roughly 5-7 minutes.

Step 4: Incorporate Cheese and Seasoning

Remove the sauce from heat and stir in the grated Parmesan cheese until melted and smooth. Season with salt, freshly ground black pepper, and optional hot sauce to taste. This sauce is the heart of your Chicken Tetrazzini, delivering rich flavor and smooth texture.

Step 5: Combine Chicken, Peas, and Pasta

Add the cooked chicken and frozen peas directly into the sauce, stirring to combine. Then fold in the cooked spaghetti, making sure every strand is coated with the creamy sauce.

Step 6: Assemble and Bake

Preheat your oven to 350°F (175°C). Transfer the pasta mixture into your baking dish and spread evenly. Tear the toasted bread slices into bite-sized pieces and scatter them over the top as a crunchy topping. Bake uncovered for 20-25 minutes until the casserole is bubbly and the bread topping is golden.

Step 7: Serve and Enjoy

Let the dish rest for a few minutes after baking to set. Serve warm and savor the comforting layers of creamy sauce, tender chicken, and crisp bread topping. This Recipe for Chicken Tetrazzini pairs wonderfully with a fresh green salad or steamed vegetables.

Better Choices & Swaps

• Use whole wheat or multigrain sandwich bread for a nuttier, more wholesome topping.
• Substitute half and half with light cream or whole milk for a lighter or richer sauce, adjusting thickening time accordingly.
• Swap frozen peas with fresh asparagus tips or chopped broccoli for a different veggie crunch.
• Instead of Parmesan, try Pecorino Romano or a mild Asiago cheese for subtle flavor twists.
• For a dairy-free version, replace butter and half and half with olive oil and coconut milk, but expect a different texture.
• In place of spaghetti, use linguine, fettuccine, or a gluten-free pasta to suit dietary preferences.

Avoid These Mistakes

• Overcooking the pasta before baking. Pasta should be al dente since it will continue cooking in the oven.
• Not thickening the sauce enough. A runny sauce results in a soggy casserole.
• Skipping seasoning. The sauce needs adequate salt and pepper to bring out all the flavors.
• Using low-quality bread for topping, which won’t crisp up nicely.
• Adding frozen peas directly without thawing can make the casserole watery; add them just before baking.

Freezer-Friendly Notes

This Recipe for Chicken Tetrazzini freezes beautifully either before or after baking. To freeze before baking, assemble the casserole in a freezer-safe dish, cover tightly with foil, and freeze for up to 3 months. When ready to bake, thaw overnight in the refrigerator and then bake as instructed, adding 10-15 extra minutes if needed. For freezing after baking, cool completely, portion into airtight containers, and freeze. Reheat in the oven at 350°F until warmed through.

Your Questions, Answered

Can I use rotisserie chicken for this recipe?

Absolutely! Rotisserie chicken is a convenient and flavorful choice that works perfectly in this Recipe for Chicken Tetrazzini. Just shred or chop the meat and add it as directed.

Is it possible to make this recipe vegetarian?

Yes, simply omit the chicken and substitute the chicken broth with vegetable broth. You can add mushrooms or tofu for extra protein and heartiness.

What can I serve alongside Chicken Tetrazzini?

A crisp green salad, garlic roasted vegetables, or steamed green beans complement the richness of the dish well. For more creamy pasta inspiration, check out this Creamy Mushroom Chicken recipe.

Can I prepare this recipe ahead of time?

Yes, you can assemble the casserole a day ahead, cover, and refrigerate. Bake it fresh when ready to serve. This makes it a perfect option for meal prep or entertaining.

What to Make After This

• Try the Alfredo Sauce Recipe for another creamy pasta classic.
• For a different creamy chicken pasta, explore the Creamy Chicken Poblano Pasta.
• If you love casseroles, consider a cheesy baked ziti or a chicken pot pie for your next meal.

Bring It to the Table

Serve this Recipe for Chicken Tetrazzini straight from the oven, allowing everyone to scoop up the creamy, cheesy pasta topped with buttery toasted bread. Garnish with a sprinkle of extra Parmesan or fresh thyme sprigs for a pretty finish. Pair it with a chilled white wine or sparkling water with lemon to refresh the palate. This dish offers comfort and elegance in every bite – a true crowd-pleaser that feels like a warm hug on a plate.

Chicken Tetrazzini isn’t just a recipe; it’s a celebration of simple ingredients coming together to create something special. Whether it’s a weeknight family dinner or a cozy weekend gathering, this Recipe for Chicken Tetrazzini will become a beloved staple in your recipe collection. Enjoy the creamy sauce, tender chicken, and that irresistible crispy bread topping every single time!

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