Heat your oven to 375°F
Lightly oil your baking dish
Cook pasta, then set it aside
Melt butter in a pan over medium heat
Cook onion, garlic, and mushrooms until soft
Add flour and mix well to make a thick paste
Slowly add broth and cream, stirring nonstop
Cook until it gets thick and creamy
Add sour cream, salt, and pepper
Mix in turkey and pasta gently
Pour it into the baking dish
Sprinkle with mozzarella and Parmesan cheese
Bake for 25-30 minutes until golden
Top with parsley and serve warm