A lovely Irish dish with cream and cheese.
Preheat the oven to 350F/175C
Thinly slice the potato and parsnip. Grate the jarlsberg and remove the thyme leaves from the stems.
In the ramekins, layer the potatoes in the bottom and add the parsnips, scallions/green and thyme. Pour a bit of cream over the layer and season with some sea salt and pepper. Grate the jarlsberg cheese over until it covers the layer. Repeat this until it is near the top. Finish with a layer of potato and cover with the cheese.
Place the ramekins onto a baking sheet and cover with tin foil. Bake for about an hour. Test with a knife to make sure the potatoes are soft. Bake uncovered until the cheese is golden brown. Serve immediately.