Preheat oven to 425. Line a baking sheet with parchment paper.
With a sharp knife, carefully slice thin slices through the width of the potato, being careful not to slice fully through to the bottom. You only want to slice the potato ¾ of the way down. Make your slices 1/8th to ¼ inch thick, depending on the size of the potato.
Sprinkle 1/2 tbsp of olive oil over the top of each potato.
Season with salt and pepper, and sprinkle the Italian seasoning over the top of the slices.
Place in the oven and bake for approximately 30 – 40 minutes.
After the time is up, turn the tray around in the oven and take this opportunity to baste the potato with extra olive oil.
Bake for a further 20 – 25 minutes. Remove from the oven and let rest.
While the potatoes are in the oven, combine sour cream and whipping cream in a one to one ratio. (1/4 cup of sour cream to a ¼ cup of cream) The actual amount you need will depend on how many potatoes you are making. Mix until well combined and season with salt and pepper, with a dash of dill or more Italian seasoning.
Just before serving, garnish the potatoes with the cream mixture.