Cut the squash in half lengthwise and place cut side down on a baking sheet (lined with foil or parchment for ease of clean up if desired) and bake until the squash collapses when poked with a firm finger, about 20-40 minutes
Remove from the oven and let cool until able to handle comfortably
Discard the seeds and then scoop the roasted squash flesh away from the skin and transfer to a bowl
Add half of the soy sauce, maple syrup, and butter (if using) and mash with the back of a spoon or fork
Taste and add the remaining soy sauce and syrup until you like how it tastes
Serve with stewed black beans on top or alongside any sort of grilled or roasted meat or fish. Note: this mash also makes the nice base for a soup and freezes perfectly