01 - Preheat oven to 425°F and line a large baking sheet with parchment paper.
02 - Slice potatoes into ½-inch thick rounds. Using a small heart-shaped cookie cutter, cut hearts from each slice.
03 - In a large bowl, toss potato hearts with olive oil, salt, pepper, and chopped rosemary until evenly coated.
04 - Arrange potatoes in a single layer on the prepared baking sheet.
05 - Roast for 25–30 minutes, flipping halfway, until golden brown and crisp at the edges.
06 - Remove from oven, sprinkle with flaky sea salt and extra rosemary or parsley if desired. Serve hot.