Preheat your oven to 350°F (175°C).
Arrange the sliced potatoes evenly in a greased 9×13 inch glass baking dish.
Pour the whipping cream over the potatoes, ensuring they are completely covered.
Season generously with salt and pepper, then sprinkle the parsley flakes evenly over the top.
Cover the dish with aluminum foil and bake in the preheated oven for 60 minutes.
Remove the foil, sprinkle the grated cheddar cheese over the potatoes, and return to the oven, uncovered, for an additional 15-20 minutes, or until the cheese is melted and bubbly.
Let the dish stand for a few minutes before serving to allow the sauce to thicken slightly.