Sift the first 3 ingredients together in a medium bowl.Add the butter and incorporate with a fork until you have a mealy texture.Gently stir in the sour cream, milk, cheddar, and garlic powder. Mix just until it is sticky and dough just comes together. Set aside while you complete the remaining prep work.
Pot Pie
Pre-heat oven to 375 degrees.
Saute potatoes, onion, carrot, celery and green beans in olive oil over medium heat in a large rimmed over safe skillet (I prefer to use a round cast iron casserole for this recipe). Cook until onions become translucent and other veggies begin to become tender.
Add flour and stir to evenly coat all the veggies. Add the turkey and gently stir.
Add the broth, milk, and thyme. Stir and bring to a light simmer to allow the sauce to slightly thicken. Season with salt and pepper.
Top the turkey mixture with the biscuit dough making 6 biscuits as pictured. Place in oven and bake uncovered for 30 minutes.