
Preheat your oven to 425°F (220°C). Generously coat a large, well-seasoned rimmed baking sheet with nonstick spray.
Wash and scrub the potatoes thoroughly, then pat them completely dry with paper towels.
Slice the potatoes into ½-inch thick slabs, then cut each slab into ¼- to ½-inch matchsticks.
Transfer the cut potatoes to a large bowl. Add the olive oil and toss until every piece is evenly coated.
Spread the potatoes in a single layer on the prepared baking sheet.
Bake for 20 minutes, then use a spatula to gently flip and rearrange the fries. Return to a single layer and continue baking for 20–25 minutes, tossing once or twice more for even browning.
Remove from the oven when the fries are crisp and golden. Season with additional salt to taste and serve immediately.