Trim the top and bottom off of the butternut squash and cut off the neck.
Peel the neck and the bulb part of the squash.
Cut into 1 inch cubes (or the size you prefer.).
Place on a parchment lined baking sheet and place in the freezer for 1 to 2 days.
Scoop the frozen squash cubes into a freezer bag or vacuum bag. Label and freeze.
Video
Notes
How much you make depends on how big your squash is! I cut mine into 1 inch cubes because that is the size I find most usable. It's perfect for butternut squash risotto or roasted butternut squash. You can store them in a freezer bag, but I like to use my vacuum sealer. They will keep for 8-12 months.