Preheat oven to 200°C. Line a baking sheet with parchment paper. This prevents sticking and makes cleanup easier. Set aside for squash preparation.

Carefully cut the spaghetti squash in half lengthwise. Use a spoon to scoop out seeds and stringy pulp. This makes room for even roasting.

Brush the cut sides with olive oil. Sprinkle salt and black pepper evenly. Rub oil and seasoning into the squash. This enhances flavor and helps roasting.

Place squash halves cut-side down on the baking sheet. Roast in the oven for 35–45 minutes. The squash should be tender when pierced with a fork.

Remove squash from oven. Let it cool slightly. Use a fork to scrape flesh into spaghetti-like strands. Transfer strands to a mixing bowl.

Add minced garlic, Parmesan cheese and chopped parsley to the squash strands. Toss gently to combine. Taste and adjust seasoning if needed.

Serve squash warm as a main dish or side. You can also add your favorite sauce or protein. Enjoy this healthy, flavorful spaghetti alternative immediately.