(recipe adapted slightly from Shauna at Gluten Free Girl )
Shred the Brussels sprouts in a food processor, mandolin or chop with a knife! Toss the sprouts in a bowl, top with toasted walnuts & grated cheese. In a small jar, add the olive oil, apple cider vinegar and mustard with a sprinkle of salt & pepper. Put a lid on the jar and shake it up! Pour the dressing over the salad and stir thoroughly! Best served immediately, although I ate leftovers the next day and it still held up well!