Score the Spaghetti Squash: Place a folded tea towel on your cutting board and set the spaghetti squash on top of it. This helps keep it from rolling around.
Hold the squash steady near the stem with your non-dominant hand.
With your other hand, use a small, sharp paring knife to make short, dashed cuts down the length of the squash, starting from the top and centre, moving away from the stem.
Turn the squash around and repeat, so there’s a dashed line running from the bottom to the stem.
Flip the squash over and do the same thing on the other side. You should now have two dashed lines running along both sides of the squash.
Slice the Spaghetti Squash: Hold the squash near the stem with one hand to keep it steady.
With your other hand, use a large, sharp knife to slice into the squash from the middle along the dashed cuts. Cut all the way down to the bottom end.
Turn the squash around, and starting from the middle again, cut down toward the stem, moving away from your hand. Do not try to cut through the hard stem.
Flip the squash over and repeat steps 6 & 7. As you cut through the bottom end this time, the squash should open slightly, making it easier to finish separating the halves.
Turn the squash around and, again starting from the middle, cut down toward the stem, being careful to keep your hand out of the way. Stop when you reach the tough stem, but cut as close to it as you can; don’t try to cut through it.
Split the Spaghetti Squash: You should have both spaghetti squash halves still attached at the stem.
Using your hands, gently pull the two halves apart to separate them.
Scoop out the seeds with a spoon by scraping them from the inside away from the flesh, leaving the middle part hollow. The Spaghetti squash is now ready to roast