Preheat the oven to 325 degrees F. Butter an 8x8x2 inch baking dish. (Photo above shows the recipe doubled in a larger 9x13 pan.)
Peel and slice the potatoes (about ¼-inch thick). Place one layer of potatoes in the baking dish; lightly season with salt and sprinkle with some garlic. Repeat layering with remaining potatoes and garlic. Pour milk evenly over the potatoes. Bake, covered, for 45 minutes.
Remove the cover, drizzle the cream over the potatoes, then return to the oven and bake uncovered for 45 minutes longer.
Serve hot; or if not serving right away, cool potatoes, cover snugly with foil and freeze until needed. Garnish with parsley, if desired.
Notes
Leftovers are good with breakfast as a side to eggs!
You can easily double the recipe if you're serving more people. Use a large 9x13 inch pan instead.