You can... but they won't be as good as the first time around. I don't like to waste food, so I try my best to gently reform the scraps by hand to make additional biscuits. They won't be as pretty, but they still taste great! The most important thing is to try not to over-handle the dough. That will cause the butter to melt and the biscuits won't be as flaky. You can probably see in the photo below which biscuits were made from the scraps.