1-Preheat oven and prepare baking sheet: Start by preheating your oven to 450°F (230°C) and lining a baking sheet with parchment paper to avoid any sticking mishaps. This step sets the stage for those golden, crispy results that everyone loves.

2-Coat the sweet potato rounds: Next, place the sweet potato rounds in a bowl and toss them with the starch until they’re evenly coated this is what gives them that awesome crunch. Then, drizzle on the oil and give everything another good mix to make sure it’s all covered. Add in the fresh herbs, freshly grated Parmesan cheese, sea salt, and freshly ground black pepper, and toss once more to blend the flavors beautifully.

3-Arrange and roast: Arrange the rounds in a single layer on your prepared baking sheet, making sure they have space to crisp up properly. Pop them in the oven and roast for 50 minutes, remembering to turn them halfway through for even browning. The total time is about 1 hour and 5 minutes, with 15 minutes for prep and 50 for cooking, and you’ll end up with a dish that’s soft inside and crispy outside.