Judi: How long it takes to roast is going to depend on how much you cut your squash up. I set the oven to about 350 to 375 degrees. Usually cut the squash in half, cut the top off and the bottom into 2 or 3 pieces. This gives me 4 or 5 pieces of squash. I don't peel until the roasting is done. Start checking with a fork or a knife at about 25 minutes. Probably will take 30 to 35 minutes before the skin and meat is soft enough to pierce easily.
If lazy, I just cut in half, remove the seeds, brush cut edges with butter or oil, turn cut side down and stick in oven. Never takes over 40 minutes or so.
Hope this helps.