Start by boiling a large pot of salted water. Add the halved baby potatoes and cook for about 15 minutes or until just tender. Drain and let them cool slightly.
Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.
In a large mixing bowl, toss the parboiled potatoes with corn starch until they are well coated.
Add the vegetable oil, gochugaru, garlic powder, soy sauce, sesame oil, and salt to the bowl. Toss everything together, ensuring that the potatoes are evenly coated in the spice mixture.
Spread the seasoned potatoes in a single layer on the prepared baking sheet. Bake for 25-30 minutes, turning them halfway through, until they are golden brown and crispy.
Once the potatoes are crispy, remove them from the oven and sprinkle chopped green onions and sesame seeds on top before serving.
Notes
Serve hot as a snack or a side dish. Drizzle with extra sesame oil for added flavor.