Cut the cauliflower into quarters and break it into large florets using your hands. Thoroughly wash and dry the cauliflower. Once dry, transfer the cauliflower to a food processor, filling only approximately 2/3 way full. You may need to do this in two batches.
Pulse the cauliflower in 1-second pulses or until desired size (it will resemble couscous). If you do not have a food processor, you can grate the florets on the large holes of a food grater, however this method is much messier and time consuming, so use a food processor if you have one.
To cook your cauliflower rice- Heat 1 tablespoon of butter or olive oil in a large skillet over medium heat. Stir in couscous and sprinkle with a little salt and pepper, stir. Cover the skillet and cook for approximately 5 minutes or until the couscous is desired tenderness.