Melt 3 tablespoons (42g) of butter in a 10-12-inch, oven safe skillet over medium heat then add the onion and cook until it becomes translucent, about 5 minutes.
3 tablespoons unsalted butter + 4 tablespoons for brushing, ½ white onion
Add the garlic and cook for another minute then add the flour, thyme, pepper and salt and cook until the flour starts to thicken, about 3 minutes.
2 cloves garlic, 3 tablespoons all-purpose flour, 1 teaspoon dried thyme, ½ teaspoon ground black pepper, ½ teaspoon salt
Pour in the chicken broth and whisk until it starts to thicken then add the carrots, celery and potatoes and cook until the veggies become tender, about 6-8 minutes.
3 cups chicken broth, 1 cup diced carrots, 1 cup diced celery, 2 cups cubed potatoes
Stir in the milk and peas and cook until the peas have fully melted, about 3 more minutes.
1 ½ cup milk, 1 cup frozen peas
Stir in the turkey until combined then turn the heat off and set the pan aside.
2 cups shredded leftover turkey
Melt the remaining 4 tablespoons (56g) of butter in the microwave and stir in the garlic powder and dried parsley.
½ teaspoon garlic powder, ½ teaspoon dried parsley
Place the biscuits on top of the pot pie mix and brush the butter on top of the biscuits.
10-12 frozen buttermilk biscuits
Bake for 20-25 minutes or until the tops of the biscuits are light and golden.
Let it cool for 10-15 minutes before serving freshly minced parsley for garnish if desired.
Notes
This turkey pot pie can be stored in an airtight container in the fridge for up to 3 days.