Chicken Tetrazzini Recipe: Creamy Mushroom and Parmesan Pasta

This chicken tetrazzini delivers creamy comfort in every bite, with tender chicken, earthy mushrooms, and al dente pasta coated in a velvety parmesan sauce. The dish combines rich flavors with a satisfying texture that makes it a family favorite.

What sets this version apart is the balance of simplicity and sophistication. The sauce comes together with basic pantry staples but tastes like it came from a gourmet kitchen. The mushrooms add depth, while parmesan provides that signature nutty richness.

The pasta absorbs the sauce beautifully, creating a dish that’s hearty without being heavy. Each forkful offers a perfect ratio of chicken, mushrooms, and pasta, all bound by that luscious, creamy sauce.

Bake until golden and bubbling for a meal that’s impressive enough for company but easy enough for a weeknight. This is comfort food at its finest.

Ingredients for Chicken Tetrazinni

Tender chicken, earthy mushrooms, and pasta bathed in velvety sauce. All the good stuff.

The mushrooms are non-negotiable here. Cremini or white work best—they hold up to cooking and soak up that parmesan sauce. I grab mine from Trader Joe’s (great price, always fresh). For the chicken, rotisserie chicken is a weeknight lifesaver, but poaching fresh breasts gives you the juiciest result. The parmesan needs to be freshly grated—pre-shredded has anti-caking agents that make the sauce grainy.

Out of sherry? Dry white wine or extra broth works fine. No cremini mushrooms? Baby bellas or shiitakes add even more depth. The pasta can be any long shape—linguine or fettuccine are great. For the milk, I wouldn’t go lower than 2%—whole milk gives you that ultra-creamy texture the dish is known for. The thyme can be fresh (just triple the amount).

Bake until golden and bubbling, then let it rest 10 minutes before serving. Leftovers keep 3-4 days in the fridge—reheats like a dream. Freezes well too, up to 3 months (just thaw overnight).

Step-by-Step Instructions for Chicken Tetrazzini

Here’s how I make this dish creamy and comforting every time.

Step 1: Cook and Shred the Chicken Breast

Start by poaching the 1.5 lb Chicken Breast in the 1.5 cups Chicken Broth with 1 tsp Salt, 0.5 tsp Black Pepper, and 0.5 tsp Dried Thyme. Bring to a gentle simmer over medium heat, then cook for 15-18 minutes until the chicken is no longer pink inside.

Remove the chicken from the broth (reserve the broth for later) and let it cool slightly before shredding it with two forks. You want fine, even shreds that will distribute nicely throughout the pasta. The reserved broth will add depth to your sauce, so don’t discard it.

Step 2: Sauté Onion, Mushrooms, and Garlic

In a large skillet, melt 0.5 cup Butter over medium heat. Add the finely diced 1 whole Onion and cook for 3-4 minutes until it starts to soften and turn translucent. The onion should be just beginning to take on a golden hue.

Add the sliced 8 oz Mushrooms and cook for another 5-6 minutes until they release their moisture and turn golden brown. Stir in the minced 3 cloves Garlic Cloves and cook for 30 seconds just until fragrant—don’t let it burn.

Step 3: Make the Creamy Roux-Based Sauce

Sprinkle the 0.33 cup All-Purpose Flour over the mushroom mixture and stir well to combine. Cook for 1-2 minutes to remove the raw flour taste. This creates a roux that will thicken your sauce beautifully.

Slowly whisk in the reserved chicken broth and 1.5 cups Whole Milk. Bring to a simmer and cook for 3-4 minutes until the sauce begins to thicken. Stir in the 2 tbsp Sherry Cooking Wine, 0.5 cup Heavy Cream, and 1 cup Parmesan Cheese, then simmer for another 2 minutes until smooth.

Step 4: Combine with Pasta and Chicken

Cook the 12 oz Spaghetti according to package directions until al dente. Drain well and add it to the sauce along with the shredded chicken. Stir everything together until the pasta and chicken are fully coated in the creamy sauce.

Let it sit for 2-3 minutes off the heat to allow the flavors to meld together. The sauce should cling to the pasta and chicken, creating a rich, cohesive dish. If it seems too thick, add a splash of milk to reach your desired consistency.

Pro Cooking Tips for chicken tetrazinni

Perfect Roux Technique

For the smoothest sauce, cook your roux until it turns a light golden color—this takes about 1-2 minutes over medium heat. I use a flat wooden spoon to keep the flour moving constantly. If it browns too much, your sauce may develop a nutty flavor.

Pasta Timing

Start cooking your 12 oz spaghetti while making the sauce. Aim for al dente texture since it will finish cooking when baked. I always use Barilla for consistent results. Drain it 1 minute early to prevent overcooking. 💡

Sauce Consistency

If your sauce thickens too much before combining with pasta, whisk in ¼ cup warm milk at a time. The sauce should coat the back of a spoon but still drip slowly. I find this happens most often if I rush the roux step.

Cheese Integration

Always use freshly grated parmesan—pre-shredded contains anti-caking agents that can make your sauce grainy. I grate mine from a Parmesan Reggiano wedge right before adding. Stir constantly as it melts to prevent clumping. 🧀

Baking Finish

For that perfect golden top, broil for the last 2-3 minutes of baking. Watch closely to prevent burning. I sprinkle extra parmesan on top right before broiling for extra crispiness and flavor.

Rest Before Serving

Let your tetrazzini rest for 10 minutes after baking. This allows the sauce to set slightly, making it easier to serve. I cover mine loosely with foil during this time to keep it warm.

Frequently Asked Questions