Turkey Tetrazzini

Instructions:

1. Preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch ceramic baking dish with butter or cooking spray to prevent sticking.
2. Boil a large pot of salted water, then add the spaghetti or linguine. Cook it for 1–2 minutes less than the package directions to keep it slightly under al dente, as it will continue to soften during baking.
3. Drain the pasta well and set it aside to avoid sogginess in the final dish.
4. In a large skillet or Dutch oven over medium heat, melt 2 tablespoons of butter. Add sliced mushrooms and sauté for 5–6 minutes until they soften and turn lightly golden brown, enhancing their flavor.
5. Add the diced onion to the skillet and cook for 3–4 minutes until translucent and fragrant, which builds the base flavor for the sauce.
6. Stir in minced garlic and cook for about 30 seconds until aromatic, then transfer the mushroom, onion, and garlic mixture to a plate.
7. Return the skillet to medium heat and melt the remaining 2 tablespoons of butter. Sprinkle in the flour and whisk continuously for 1–2 minutes to form a smooth roux that will thicken the sauce.
8. Gradually whisk in the chicken or turkey broth to avoid lumps, creating a smooth base for the creamy sauce.
9. Slowly add whole milk and heavy cream while stirring continuously to achieve a rich, velvety texture.
10. Simmer the sauce gently for 4–5 minutes, stirring often, until it thickens enough to coat the back of a spoon, indicating it’s ready for the next step.
11. Lower the heat, then mix in sour cream, freshly grated Parmesan, and shredded mozzarella. Stir gently until the cheeses melt completely, creating a luscious sauce.
12. Season the sauce with garlic powder, onion powder, dried thyme, black pepper, and salt, stirring to distribute the flavors evenly.
13. Add the sautéed mushrooms, onions, garlic, leftover turkey, frozen peas, and chopped fresh parsley back into the skillet. Fold everything together carefully so the turkey and vegetables are coated in the creamy sauce.
14. Incorporate the cooked pasta into the sauce, tossing gently to ensure every strand is generously coated. The mixture should appear extra creamy since some sauce will be absorbed during baking.
15. Transfer the entire mixture into the prepared baking dish, spreading it evenly to fill all corners.
16. Sprinkle the remaining mozzarella and Parmesan cheeses evenly over the top to create a rich, cheesy crust.
17. Combine panko breadcrumbs with melted butter in a small bowl, tossing to coat the crumbs lightly. Sprinkle this mixture evenly over the cheese layer for a crispy golden topping.
18. Place the casserole on the middle oven rack and bake uncovered for 25–30 minutes until the sauce bubbles at the edges and the topping turns a beautiful golden brown.
19. If the topping needs more color, broil for 1–2 minutes at the end, watching closely to prevent burning.
20. Remove from the oven once the center reaches 165°F (74°C) and is piping hot. Let the dish rest for 5–10 minutes to allow flavors to settle and the sauce to thicken slightly.
21. Before serving, sprinkle with freshly chopped parsley for a burst of color and fresh flavor.
22. Serve warm alongside garlic bread, a fresh green salad, or roasted vegetables for a comforting meal that transforms leftover turkey into something special.

Variations

• Swap out spaghetti or linguine for egg noodles or fettuccine for a different pasta texture and shape.
• Replace frozen peas with fresh green beans or asparagus tips for a seasonal twist.
• For a richer sauce, substitute half the heavy cream with leftover homemade turkey gravy.
• Add cooked bacon or pancetta for smoky, savory depth.
• Incorporate sautéed spinach or kale into the sauce for an extra boost of greens.
• Use sharp cheddar cheese instead of mozzarella for a tangier topping.

Tips

• Cook pasta slightly under al dente to prevent mushiness after baking, as it continues to soften in the oven.
• Make the sauce a bit thinner than usual because the pasta will absorb liquid during baking, ensuring the final dish remains creamy.
• Store leftovers in an airtight container in the refrigerator for up to 3–4 days; reheat gently in the oven or microwave until piping hot.
• This casserole freezes well. Cool completely, then freeze in portions for up to 3 months. Thaw overnight in the fridge before reheating.
• Assemble the casserole ahead of time and refrigerate it; add a splash of broth or milk before baking if the pasta has absorbed too much sauce.
• Use a food thermometer to check that the internal temperature reaches 165°F (74°C) to ensure it is safe to eat.
• Fresh parsley sprinkled on top just before serving adds vibrant color and fresh herbal flavor.