Preheat oven to 425°F. Spray 2 baking sheets with nonstick spray. Cut carrots into French-fry-shaped spears and lay them on the sheets. Cut your fries into similar sizes. Otherwise some may burn while others are barely cooked. Don't crowd your fries. If you put too many on one sheet, they won't crisp up. The thicker the fries, the longer the cook time.
Sprinkle with salt. Bake for 15 minutes. Flip spears. Bake until tender on the inside and slightly crispy on the outside, about 15 more minutes.
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