Ever so lightly spray a baking sheet with oil then place carrots on the baking sheet and spread evenly in a single layer. Spray a little more oil to cover the tops of the carrots and toss carrots with olive oil salt and pepper
Roast in the oven on the top rack of the oven for 15 minutes then take the tray out and jiggle the pan to move the carrots around, or use a spatula to flip the carrots, bake for an additional 5-10 minutes