Preheat oven to 375F. Season your turkey roll to your liking. Add 1" of water to bottom of the roasting pan. Reduce the oven temperature to 325F. Place in a covered roasting pan or baking dish and bake/roast at 325F for 30-40 mins per lb. The internal thermometer should read 170F - 180F (77C - 82C). Remove from the oven, tent, and let rest for 15 min.
Transfer to a cutting board, remove twine, and cut crosswise into 1" thick slices. Place slices on a platter, and garnish with parsley.