Turkey Tetrazzini Mushrooms Peas (Printable)

Baked pasta dish blending turkey, mushrooms, peas, and creamy cheese for a hearty meal.

# What You Need:

→ Pasta

01 - 12 oz spaghetti or fettuccine

→ Turkey & Vegetables

02 - 2 cups cooked turkey breast, shredded or cubed
03 - 9 oz cremini or white mushrooms, sliced
04 - 1 cup frozen peas, thawed
05 - 1 small onion, finely chopped
06 - 2 garlic cloves, minced

→ Sauce

07 - 4 tbsp unsalted butter
08 - 4 tbsp all-purpose flour
09 - 2 cups whole milk
10 - 1 cup chicken or turkey broth
11 - ½ cup heavy cream
12 - ½ tsp freshly ground black pepper
13 - ½ tsp salt
14 - ¼ tsp ground nutmeg

→ Cheese & Topping

15 - 1 cup grated Parmesan cheese, divided
16 - 1 cup shredded mozzarella cheese
17 - ½ cup panko breadcrumbs
18 - 2 tbsp unsalted butter, melted
19 - 2 tbsp chopped fresh parsley (optional)

# How-To Steps:

01 - Preheat the oven to 375°F. Grease a 9x13 inch casserole dish.
02 - Boil pasta in salted water until just al dente. Drain thoroughly and set aside.
03 - Melt 2 tablespoons of butter in a large skillet over medium heat. Cook onions for 2 minutes until softened. Add mushrooms and cook about 6 minutes until golden and liquid evaporates. Stir in garlic and cook 1 additional minute. Remove from heat.
04 - In a saucepan over medium heat, melt remaining 2 tablespoons butter. Whisk in flour and cook for 1 minute. Gradually whisk in milk and broth, stirring until smooth. Simmer 3 to 4 minutes until thickened. Stir in heavy cream, salt, pepper, nutmeg, and ½ cup Parmesan cheese until melted and combined.
05 - In a large bowl, gently toss together the cooked pasta, turkey, sautéed mushrooms and onions, peas, mozzarella, and prepared sauce until evenly coated.
06 - Transfer the mixture into the prepared casserole dish. Evenly sprinkle the remaining ½ cup Parmesan cheese over the top.
07 - Combine panko breadcrumbs with melted butter, then sprinkle evenly over the casserole’s surface.
08 - Bake the casserole for 25 to 30 minutes until bubbly and golden brown. Let rest for 10 minutes before serving. Garnish with fresh parsley if desired.

# Expert Tips:

01 -
  • It transforms ordinary turkey into something creamy and craveable without any fuss or pretense.
  • The golden crust on top hides a silky sauce underneath—that contrast of textures is exactly what makes you go back for seconds.
  • Most of it comes together before the oven, so you're actually relaxing while it bakes.
02 -
  • Cook the pasta slightly underdone or it will turn soft and broken once it bakes; it continues cooking in the hot cream sauce.
  • Whisk the cream sauce constantly while adding milk and broth, or you'll end up with lumps that ruin the whole texture.
  • Don't skip the resting time—those 10 minutes make the difference between a casserole that slides everywhere and one that holds its shape beautifully.
03 -
  • Always taste the cream sauce before it goes into the casserole; it's your only chance to fix the seasoning without starting over.
  • The golden breadcrumb topping is where the magic happens—don't skip it or you'll miss what makes this more than just pasta in cream sauce.

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