Preheat the oven to 425°F. Line a baking sheet with parchment paper.
On the baking sheet, toss the carrots with olive oil until evenly coated.
Roast for 30–35 minutes. About 7–10 minutes into the cooking process, open the oven door for 5–10 seconds to let out any steam — this helps with browning.
Remove the baking sheet from the oven and serve the carrots hot, or cool them to room temperature.
If you’re serving them as a side dish, pile them onto a spinach leaf–lined serving platter and sprinkle with Everything but the Bagel seasoning.
If you’re enjoying individual portions, sprinkle the seasoning over the carrots while they’re still on the baking sheet and skip the spinach.