1. Preheat the oven to 350°F and line a baking sheet with parchment paper.
2. Place the squash cut-side down on the prepared baking sheet, and then place it in the hot oven to bake for 30 to 35 minutes.
3. Once the squash is baked, it can be easily pierced with a knife, remove it from the oven and let it cool for 5 minutes.
4. When the squash is cool enough to handle, scoop out the inside into a medium bowl using a spoon, and then top it with the olive oil, parmesan, salt, and pepper, tossing everything together.
5. Once the squash is well combined, serve it up, garnish it with some parsley, and dig in!