Line a baking sheet with foil and preheat the oven to 350 degrees.
Brush olive oil on the cut sides of the squash. Place cut-side down on a foil-lined baking sheet.
Bake at 350 degrees for 30 minutes. Remove from the oven. Using tongs, turn the squash halves over.
Place 1 tablespoon butter, 1 tablespoons maple syrup, 1/8 teaspoon ground cinnamon and a pinch of ground nutmeg and ground cloves into each squash half.
Return to the oven and bake for an additional 30 minutes or until the flesh is easily pierced with a knife or fork.
Remove from oven and let cool for 5-10 minutes before serving.
Storage - Leftover baked squash can be stored, wrapped in foil, in the fridge for 2-3 days.Reheating - For best results, I like to reheat the squash in the oven. Keep the squash wrapped in the foil and reheat at 400 degrees F until warmed through.