Pureed squash is really easy to make, and turns out nice and smooth when you blend it.
Using 1 acorn squash, cut it up and peel it. I cut it in half, then cut each half into fourths so it was easier to manage. I used a vegetable peeler to peel the skin off.
Chop the acorn squash into chunks of about 1 1/2 inches. Add the chunks to a pot in a steamer basket with a little water undernea
Steam the squash for about 10 minutes, or until it is soft. Let it cool for a few minutes, then add it to the blender with some of the water from the bottom of the pot.
Puree water and squash in the blender for less than a minute. It shouldn’t take long for it to become smooth enough for baby to eat. Don’t forget to rinse your blender or wash it right away! Dried baby food is comparable to CEMENT! 
And that’s it! Pretty easy, huh?