# List of ingredients:
→ Poultry & Dairy
01 - 2 cups cooked shredded turkey or chicken
02 - 1 cup whole milk
03 - 1/2 cup sour cream
04 - 1/2 cup grated Parmesan cheese, divided
05 - 1 cup shredded mozzarella cheese
→ Pasta
06 - 8 ounces cooked spaghetti or linguine, drained
→ Vegetables
07 - 1 cup frozen peas, thawed
08 - 1/2 small yellow onion, finely chopped
09 - 2 cloves garlic, minced
→ Sauce & Seasonings
10 - 2 tablespoons unsalted butter
11 - 2 tablespoons all-purpose flour
12 - 1/2 teaspoon salt
13 - 1/4 teaspoon black pepper
14 - 1/4 teaspoon dried thyme
15 - 1/4 teaspoon ground nutmeg, optional
→ Topping
16 - 1/2 cup panko breadcrumbs
17 - 2 tablespoons melted butter
18 - 1/4 cup grated Parmesan cheese
# How to make it:
01 - Preheat oven to 400°F. Lightly grease a 9x13-inch baking dish.
02 - Melt butter in a large skillet over medium heat. Add chopped onion and minced garlic; sauté for 2 to 3 minutes until softened.
03 - Stir in flour and cook for 1 minute, whisking constantly.
04 - Gradually whisk in milk, stirring constantly until the mixture thickens, about 2 to 3 minutes. Remove from heat and mix in sour cream, 1/4 cup Parmesan, mozzarella, salt, pepper, thyme, and nutmeg if using.
05 - Fold in cooked pasta, shredded turkey or chicken, and thawed peas until all components are evenly coated with the sauce. Transfer the mixture to the prepared baking dish.
06 - In a small bowl, combine panko breadcrumbs, melted butter, and remaining 1/4 cup Parmesan cheese. Evenly sprinkle over the casserole.
07 - Bake for 15 to 20 minutes until the topping is golden brown and the casserole is bubbling. Allow to rest for 5 minutes before serving.