Preheat oven to 400 degrees. Cut the acorn squash in half and use a spoon to scoop out the seeds.
Place on a non-stick baking sheet centers up. Spread the butter equally on each squash half. Add pecans to the spooned out sections of each half.
In a small bowl, mix together the brown sugar, cinnamon, and salt. Spread all over the squash and pecans evenly. Drizzle the maple syrup over each side.
Bake 55-60 minutes. Squash will be fork tender. Serve immediately using the liquid center as a sauce, or let the squash cool, soaking the sweet flavors into the flesh.