Remove pre-sliced brisket from the vacuum-sealed bag and gently break apart using your hands or tongs. Shingle the meat in an oven safe dish, add gravy over the top, cover with foil and reheat for 45-60 minutes at 400°F.
Remove sliced brisket from the oven safe dish with tongs and shingle on a heavy serving platter. Ladle over gravy from the cooking pan. Serve any remaining gravy on the side in a bowl or gravy boat. Garnish with fresh picked parsley leaves. Serves up to 8 with 4oz portions.