01 - Preheat oven to 425°F. Line a baking sheet with parchment paper or grease lightly.
02 - Place whole potatoes in a large pot and cover with cold water. Add a pinch of salt. Bring to a boil and cook for 15 to 20 minutes until fork tender.
03 - Drain the potatoes and allow them to steam-dry for 2 minutes. Arrange on the prepared baking sheet, spacing evenly.
04 - Using the bottom of a glass or a potato masher, gently press each potato until about ½ inch thick.
05 - In a small bowl, combine olive oil, minced garlic, sea salt, black pepper, and Italian herbs if using. Brush evenly over smashed potatoes.
06 - Generously sprinkle freshly grated Parmesan cheese over each potato.
07 - Roast in the preheated oven for 15 to 20 minutes until potatoes are crisp and golden brown.
08 - Remove from oven, sprinkle with chopped fresh parsley if desired, and serve immediately.