1. Preheat oven to 425 degrees Fahrenheit (220 degrees Celsius). Lightly grease a baking sheet with cooking spray.
2. Slice potatoes into medium-sized steak fries and place on the prepared baking sheet. Drizzle with olive oil. Add brown sugar to the spice blend and mix until well incorporated. Sprinkle about half the spice blend onto the potatoes and toss to coat.
3. Place baking sheet in the middle rack of your oven and roast potatoes for 30–35 minutes, flipping them over about halfway through the baking time.
4. Remove from oven and drizzle immediately with apple cider vinegar and additional spice blend. Toss to coat and serve hot.