Put melted butter in baking dish
Layer chicken on top of butter
Pour veggies on top
Add garlic salt
Add black pepper
Add thyme
In a separate container whisk 2 cups milk with biscuit mix (add included flavor pouch)
Pour mixture into baking dish
Combine 1.5 cup chicken broth with cream of mushroom soup, mix until smooth
Pour mix on top
Bake ~1 hour at 350F