Preheat your oven to 400°F (200°C).
Cut the acorn squashes in half lengthwise and scoop out the seeds.
Place the squash halves cut-side up in a baking dish.
In a small bowl, mix together brown sugar, melted butter, cinnamon, and salt.
Spoon the mixture evenly into each half of the acorn squash.
Cover the baking dish with aluminum foil and bake for 25 minutes.
Remove the foil and bake for an additional 15-20 minutes, or until tender and caramelized.
Remove from the oven and let cool slightly before serving.
