Step 1

Preheat the oven to 425 degrees F and line two rimmed baking sheets with foil.

Step 2

Leaving the peels on, cut the red potatoes into strips about 1/2 x 1/2 x 3-4 inches. (The more consistent the size is, the better the fries bake.) Place the fries on a baking sheet and top with oil and harissa. Toss and coat thoroughly. Spread the fries out over both baking sheets, so that none of them touch.

Step 3

Bake for 20 minutes, then gently flip and bake another 10-15 minutes, until golden and crisp. Serve warm.