Preheat oven to 425°F. Line a heavy baking sheet with aluminum foil.
Peel the potatoes and cut into similar sized wedges, about 16 wedges per
potato.
Toss potato wedges with oil and arrange the potatoes in a single layer
on the prepared baking sheet. Spray lightly with cooking spray and roast
until browned and tender when pierced with a fork, about 30 minutes. Turn
if desired for more even browning. Serve immediately.