Spray 12 cup standard muffin pan with nonstick cooking spray.
In a small sauce pan, combine cream, thyme, garlic, and nutmeg. Bring to a slow simmer and remove from the heat. You want the cream just heated through. Discard the thyme.
Toss the potato slices with salt and pepper and layer into stacks in the prepared muffin cups, filling each one to the top.
Spoon cream over each potato stack, filling to the top. Sprinkle with parmesan cheese.
Bake for 25-30 minutes or until the potatoes are knife tender and golden brown on top.
Remove the muffin pan from the oven and let sit for 5 minutes. Carefully remove each potato stack with a fork to a serving platter. You can also run a knife around the edges to loosen up the potatoes.