Step 1

Wash the potatoes well under running water and cut them into chunks. Transfer them into a large bowl. Add the seasoning and toss the potatoes until all the potatoes are well coated.

Step 2

Peel and cut the onion in half and cut each half into slices. Separate the slices and add them to the bowl altogether with rosemary (remove the stems). Mix.

Step 3

Divide the potatoes between 4 sheets of aluminum foil. Top each portion with about a tablespoon of butter and wrap them in foil.

Step 4

Cook in the ashes/on a grill for about 30-40 minutes or until they look to your liking.

Step 5

When ready, carefully open the packets and sprinkle generously with Parmesan.

Step 6

Serve warm!