First you need to have a large sharp knife. After that, the most essential thing to keep in mind when it comes to cutting anything is to stabilize whatever it is you are attempting to cut. This is nowhere else as critical as when cutting a butternut squash, a notoriously difficult task because of the thickness and density of that squash.
How to Cut and Peel a Butternut Squash
The most important thing to consider when following these steps, or anyone else’s steps for cutting winter squash is to keep whatever pieces you are working on as stable as possible. The first cut from the bottom of the squash is to help keep the squash steady on the board as you gently work your knife down from the top to bottom. By the way, it helps to microwave a butternut squash (whole) for 30 seconds or so first, before peeling. This will help soften the peel just enough to make it a bit easier to peel. Some squashes can be pretty hard; to help with the cutting you can use a rubber mallet to gently tap on the ends of the knife to help push the knife down through the squash. One 1 1/2 pound butternut squash will yield approximately 4 cups of 1/2-inch cubed squash.