Preheat the oven to 400°F
Wash the butternut squash
Cut off the ends
Peel the skin
Slice the squash in half lengthwise
Scoop out the seeds
Cut the squash into cubes or leave it halved
Toss with oil, salt, and pepper
Place on a baking sheet
Roast for 25 to 40 minutes until tender
Flip halfway through if cubed
Remove from the oven
Serve as desired