Preheat oven to 400 degrees F.
Cut into the side of the pumpkin, perpendicular to the stem.
Cut through one side of the pumpkin until you hit the stem, then repeat on the other side.
Break the pumpkin in half.
Cut the sides of the pumpkin into slices.
Remove the center and seeds.
Cut the pumpkin out of the skin.
Place on a baking sheet, drizzle with oil, and roast in the oven for about 20 minutes.
Remove from the oven, flip each slice over, and continue to roast for another 20-25 minutes.
Serve and enjoy or blend for pumpkin puree!