Follow these simple steps to create One Pot Turkey Tetrazzini effortlessly:

1. Sauté Vegetables: In a large pot, heat olive oil over medium heat. Add the chopped onion and minced garlic, cooking until the onion is translucent, about 3-5 minutes.
2. Add Turkey and Mushrooms: Stir in the sliced mushrooms, cooked turkey, dried thyme, Italian seasoning, and salt and pepper. Cook for another 5-7 minutes, allowing the mushrooms to soften.
3. Add Pasta and Liquid: Pour in the chicken broth and bring to a boil. Add the spaghetti or fettuccine, stirring to ensure the noodles are submerged into the liquid.
4. Simmer: Reduce the heat to medium-low and cover the pot. Allow the mixture to simmer for about 15-20 minutes or until pasta is tender, stirring occasionally.
5. Stir in Cream and Peas: Once the pasta is cooked, mix in the heavy cream and frozen peas. Stir to combine everything evenly. Cook for an additional 2-3 minutes until heated through.
6. Top with Cheese: Sprinkle shredded mozzarella cheese on top of the dish. Cover again and let it sit for 5 minutes to allow the cheese to melt.
7. Serve: Remove from heat, garnish with fresh parsley, and serve warm!