Heat 2 quarts of water just to the boiling point, then turn off the heat. 

Whisk in half a standard package of turkey gravy mix. Turn the heat back on to low-medium and whisk until it comes to a gentle boil. Cook for 1 minute, then remove from heat and let cool slightly. 

In a parchment-lined roasting pan, mix together the thawed turkey breast and roasted root vegetables. 

Gently pour the prepared gravy over the turkey and vegetables.

Sprinkle about 2 1/2 cups seasoned breadcrumbs evenly over the top.

Cover with foil and roast at 325F for 20 minutes. Remove the cover and continue baking until the dish reaches an internal temperature of 145F

Cool Completely, then either reheat in individual portions or reheat the whole pan for service! Enjoy!