1. Cut the butternut squash into two halves, scrape out the seeds, peel off the skin and rinse the halves under running water. Blot out the water with paper towels, and cut into one-inch-thick pieces.
2. Preheat the oven to 350F or 400F, and pour the diced squash into a bowl, then add the seasoning and oil. Toss until everything combines, and spread them out on a foil-lined baking sheet.
3. Cook the diced squash in the oven for 30 minutes, or until the flesh is lightly browned and tender. Then, serve immediately as desired.

You can also follow this video for more help.