Preheat oven to 425°F. Optional: Line a baking sheet with parchment paper or silicone baking mat.
Cut rutabaga in half and trim ends. Remove peel, then cut rutabaga into even-size pieces. Add to a bowl and toss with olive oil. Sprinkle on salt and pepper and toss again to evenly coat.
Spread rutabaga onto baking sheet in a single layer, leaving space around each piece.
Roast for 30-40 minutes, until pieces are tender and bottoms are caramelized.