Cooking spaghetti squash can be done one of two ways. A) You can cut it in half (which is not easy to do) and bake it in a baking dish with about 1/2 inch of water in the bottom, or B) you can poke holes in a whole, uncut squash with a fork and bake it that way using a baking pan with 1/2 inch of water in the bottom. But it will take much, much longer to bake. So the choice is to either struggle with cutting the squash, or bake it for a long time (probably somewhere around 2 hours would be my guess. Personally, I cut mine).