Set your oven to 425°F and let it come to full temperature. This intense heat is essential for achieving that coveted crispy exterior.
Slice your potatoes into uniform 1-inch pieces — consistency here means even cooking. Smaller pieces will burn while larger ones stay underdone.
Place the potato chunks in a large bowl and rinse under cold running water until the water runs mostly clear, then drain thoroughly. Pat every piece completely dry with paper towels — any lingering moisture will create steam instead of browning.
Add the olive oil, salt, pepper, garlic powder, and any optional seasonings to the dried potatoes. Toss everything together until each piece is evenly coated — the oil should distribute without pooling in the bowl.
Arrange the seasoned potatoes on a rimmed baking sheet in a single layer with space between each piece. Crowding leads to steaming, which prevents proper crisping.
Slide into the oven and roast undisturbed for 20 minutes. Resist the urge to check or move them — they need this uninterrupted time to develop their initial crust.
⏱ 20 min
Use a thin spatula to flip each potato, then continue roasting until deep golden brown all over. The edges should look crispy and the surfaces should have developed a beautiful bronzed color.
⏱ 15 min
Transfer to a serving dish right away while the exteriors are still at peak crispiness. They're best enjoyed immediately, when the contrast between crisp outside and fluffy inside is most pronounced.