Pre-heat oven to 350 F. Cut squash in half, scoop out seeds. Score squash in two directions diagonally, spread butter on it, add salt and pepper; cinnamon. Put in a 2 qt. pan with a little water in it. Cover with foil. Bake for about 45-60 mins. Keep checking it with a fork; when it slides off the fork, it's done.
When the squash has cooled, scoop out squash into seving size portions into quart size freezer baggies to put in the freezer; save some for that night's dinner.