This is acorn squash, but as far as I know this works for all types of squash.
Cut the squash in half.
Remove the seeds.
Bake at 350˚ for 1-2 hours, until the outside is flexible.
Scoop the insides out and serve or save.
I bake them upside down.
My mom would put them right side up and put a pat of butter and spoon of brown sugar in the acorn squash. Then she would give person their own half of a squash to eat.