I got the recipe from Get off your butt and bake and I adapted it slightly for our family, so I'm giving you the link to the original recipe and below I'm posting the way I made mine.
Creamy Cheesy Potatoes
Adapted from: Get off your butt and bake
1 HUGE potato, cut into thin fries
1 pint heavy cream
Salt and Pepper
grated cheddar cheese
I think everyone knows how to make fries, but anyway, peel the potatoes, wash them and then slice them into thin slices first,
then cut them into thin fries.
Place in a baking dish. One of the things I most love about this dish is that you can make as much or as little as you need, hence use as many potatoes as needed to fill the dish. I had a HUGE and I mean HUGE potato that was enough for meal.
Sprinkle on salt and pepper,
pour the heavy cream over the potatoes.
Cover with shredded cheese, again, as much or as little as you want. You don't have to add the parsley, but I agree with Jonna who says it makes it look prettier.
Cover with foil, place in the middle oven rack and bake for about an hour at 400 degrees or until potatoes are fork tender.
For the original recipe, go on over to Jonna's blog "Get off your butt and bake".