Heat oven broiler. Grease four deep individual-sized ceramic ramekins, and set aside.
Meanwhile, add the turkey, peas, carrots, gravy and cream, if using, to a 2-quart pot. Stir to mix well. Heat over medium flame until meat and vegetables are heated through, but do not let it come to a boil. Stir in the parsley.
Evenly spoon into the prepared ramekins. Spread an equal amount of mashed potatoes over the top. Place ramekins on a rimmed baking sheet and place under the oven broiler. Cook until topping is golden and filling bubbles from sides. Serve with a side salad.
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