1. Preheat the oven to 400 F (200 C).
2. Scrub the potatoes clean.
3. Using a sharp knife, make slices across the potato, being sure to stop before you reach its bottom.
4. Slice the butter and Parmesan.
5. Next, open the potatoes’ crevices and shove the Parmesan and butter, alternating between the two.
6. Transfer the potatoes onto an oiled baking sheet and drizzle a little oil on top of the potatoes.
7. Season with salt and garlic powder. You can be quite generous with salt.
8. Bake for about 60 minutes.
9. After about 45 minutes, remove the baking sheet from the oven. Drizzle cream over the top and top with grated cheese. Any cheese you like.
10. Return the baking sheet to the oven for the last 15 minutes.
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