This one-pot method transforms leftover turkey into a creamy, comforting classic with minimal effort. The Instant Pot handles everything—pasta, sauce, and protein—all at once.
I developed this recipe to capture that traditional baked tetrazzini texture without the oven. The pressure cooker infuses every noodle with rich, velvety sauce while keeping the turkey tender.
You’ll end up with a dish that’s as indulgent as the original, but ready in a fraction of the time. The pasta cooks perfectly al dente, and the sauce clings beautifully to every bite.
No pre-cooking required, and only one pot to clean. This is comfort food made practical.
Ingredients for Instant Pot Turkey Tetrazzini
Leftover turkey, pasta, and a handful of pantry staples create this creamy one-pot wonder.
| Ingredient | Amount | Notes |
|---|---|---|
| Cooked Turkey 🦃 | 3 cups | Shredded leftover turkey preferred |
| Spaghetti 🍝 | 8 oz | Broken into thirds to fit |
| Unsalted Butter 🧈 | ½ cup | Divided for sauce and topping |
| All-Purpose Flour 🌾 | ½ cup | For roux base |
| Whole Milk 🥛 | 2 cups | Full-fat for creaminess |
| Chicken Broth 🍲 | 2 cups | Low-sodium preferred |
| Heavy Cream 🥣 | 1 cup | For rich velvety texture |
| Parmesan Cheese 🧀 | 1 cup | Freshly grated from block |
| Garlic Cloves 🧄 | 3 cloves | Minced for depth |
| Onion 🧅 | 1 whole | Finely diced yellow onion |
| Dry Sherry 🍷 | ¼ cup | Or substitute white wine |
| Mushrooms 🍄 | 8 oz | Sliced cremini or white |
| Salt 🧂 | 1 tsp | Diamond Crystal kosher preferred |
| Black Pepper 🌶️ | ½ tsp | Freshly ground for best flavor |
| Dried Thyme 🌿 | ½ tsp | For subtle earthy notes |
The turkey is the foundation here. Use leftover roasted turkey—the already-cooked meat absorbs the creamy sauce beautifully without drying out. For the broth, Swanson or Kitchen Basics offer consistent quality. The Parmesan must be freshly grated from a wedge; pre-shredded contains anti-caking agents that prevent smooth melting. Mushrooms add depth—cremini offer more flavor than white, but either works.
No dry sherry? Sauvignon Blanc or any dry white wine at one-third the amount works perfectly. Heavy cream can be swapped for half-and-half (slightly less rich) or whole milk plus 2 tbsp melted butter. For a gluten-free version, cornstarch slurry replaces the flour in equal amounts. The sherry can be omitted entirely, but it adds a subtle complexity worth including.
This dish reheats beautifully—the sauce thickens further as it rests. Stores 3-4 days in the fridge (add a splash of milk when reheating) or freezes for 2-3 months. Portion before freezing for easy single servings.
Why You’ll Love This Recipe
- One Pot Magic: I just dump everything in the Instant Pot—turkey, spaghetti, the creamy roux—and let it do the work.
- Rich Creamy Bite: The butter, flour, and whole milk create this velvety sauce that clings to every strand of pasta.
- Leftovers for Days: Honestly, it tastes even better the next day, and it reheats like a dream.
- Stretch That Turkey: I use leftover holiday turkey, so nothing goes to waste and my wallet stays happy.
Step-by-Step Instructions for Instant Pot Turkey Tetrazzini
This one-pot method delivers creamy, comforting results with minimal active cooking time.
Step 1: Sauté Aromatics and Mushrooms
Set the Instant Pot to the Sauté function on Normal heat. Melt 0.5 cup Unsalted Butter in the insert, then add the 1 whole Onion (finely diced) and 8 oz Mushrooms (sliced). Cook for 5-6 minutes until the mushrooms release their moisture and the onion becomes translucent.
Add the 3 cloves Garlic Cloves (minced) and 0.5 tsp Dried Thyme, stirring constantly for 30 seconds until fragrant. This builds the flavor foundation for the dish. Avoid letting the garlic brown, as it can turn bitter.
Step 2: Create the Roux and Deglaze
Stir in the 0.5 cup All-Purpose Flour to form a smooth paste with the butter and vegetable mixture. Cook for 1-2 minutes to remove the raw flour taste, stirring constantly. The mixture should look like a thick, golden paste.
Pour in the 0.25 cup Dry Sherry, scraping the bottom of the pot to deglaze and incorporate any browned bits. This step prevents burning and adds depth to the sauce. Let the sherry simmer for 1 minute to cook off the alcohol.
Step 3: Pressure Cook the Pasta and Turkey
Add the 8 oz Spaghetti (broken into thirds), 2 cups Chicken Broth, 2 cups Whole Milk, 1 tsp Salt, and 0.5 tsp Black Pepper. Stir well to combine, ensuring the spaghetti is submerged in the liquid. Top with the 3 cups Cooked Turkey (shredded), pressing it down gently into the mixture.
Secure the lid, set the valve to Sealing, and cook on High Pressure for 4 minutes. The pasta should be al dente when done. Once the cooking cycle completes, perform a quick release to stop the cooking process immediately.
Step 4: Finish with Cream and Cheese
Stir in the 1 cup Heavy Cream and 1 cup Parmesan Cheese (freshly grated) until the cheese is fully melted and the sauce is smooth. The mixture should thicken as it cools slightly. If the sauce is too thick, stir in a splash of additional Chicken Broth or Whole Milk to reach the desired consistency.
Let the tetrazzini sit for 5 minutes to allow the flavors to meld and the sauce to thicken further. The pasta will continue to absorb liquid during this time, so the final texture should be creamy and rich, coating every strand of spaghetti and piece of turkey.
Pro Tips For Making Instant Pot Turkey Tetrazzini
- Sauté the Flour: After melting the butter, cook the flour for 1-2 minutes to remove the raw taste—this makes a real difference in the final sauce. I learned this the hard way after my first batch had that uncooked flour aftertaste.
- Shred the Turkey: Tear the cooked turkey into small, even pieces rather than chopping—it absorbs the creamy sauce better and gives every bite more flavor.
- Skip the Pre-Boil: Add dry spaghetti directly to the Instant Pot with the liquid—it cooks perfectly in the pressure cooker, saving you a pot and time. Sounds weird, but it works.
- Thin Gradually: If the sauce is too thick after pressure cooking, stir in warm milk a little at a time instead of dumping it all in at once. After burning three batches, I finally figured out this is the way to control the consistency.
Health Benefits of instant pot turkey tetrazzini
Protein Powerhouse
This dish packs 30g of protein per serving from the turkey, making it excellent for muscle repair and satiety. The combination of lean protein and complex carbs from pasta creates a balanced meal that keeps you full for hours. I always feel satisfied but not sluggish after eating this. 💪
B Vitamin Boost
Turkey provides B6 and B12, essential for energy metabolism and brain function. The milk and cream add vitamin B2 (riboflavin), which supports healthy skin and vision. Together, they make this creation a nutritional powerhouse.
Calcium Rich
The Parmesan cheese and whole milk contribute significant calcium—about 40% of your daily needs per serving. This mineral is crucial for bone health and muscle contractions. It’s a comforting way to get your dairy.
Comfort Without Guilt
While indulgent, this recipe offers more than empty calories. The mushrooms provide selenium and copper, antioxidants that support immunity. Even comfort food can nourish your body. ✨
Energy Fuel
The complex carbs from spaghetti provide steady energy, while the healthy fats in heavy cream help your body absorb fat-soluble vitamins. It’s a meal that fuels both body and soul.
Hydration Helper
The chicken broth base contributes to your daily fluid intake. Staying hydrated is easier when your meals include flavorful liquids. I love how this dish sneaks in extra hydration.
Nutrition Facts
Frequently Asked Questions
Can I use rotisserie chicken instead of turkey?
Yes, rotisserie chicken works perfectly as a substitute. Use 3 cups of shredded chicken for the same rich flavor. The cooking time remains unchanged since the protein is already cooked through.
How do I prevent the pasta from sticking?
Break the spaghetti into 3-inch pieces and ensure it’s fully submerged in liquid. Stir well before pressure cooking and avoid overfilling the pot beyond the 2/3 max line.
Can I make this gluten-free?
Swap the flour for a cornstarch slurry and use gluten-free spaghetti. Add the pasta with 1 extra minute of pressure time to ensure it cooks fully.
Why is my sauce too thin?
Let it sit for 5-10 minutes after cooking—the pasta will absorb more liquid. If still thin, simmer uncovered on Sauté mode until thickened. Never skip the resting time.
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