Shredding brussels sprouts can be a bit time consuming, but it's very easy and they may be prepped a few days in advance. It's best done with a sharp knife, or a food processor can be used in a pinch. Place the brussels sprout on its side on a cutting board and remove the bottom stem, then cut in half lengthwise. Remove the tough dark green outer leaves, then place cut side down on the cutting board and shave or shred thinly.