Food processor: If you have a grater attachment, you will get the best results. If not, you can process in the normal way. Add three cauliflower florets to the food processor and grate into small rice like pieces.
Saute method: Add 1 tbsp olive oil to a small pan over medium heat. Stir to lightly saute and then cover for 5-7 minutes to steam until rice is tender. Season well with salt, pepper, and your favorites spices or herbs.
Microwave option: Add the cauliflower to a microwave-safe container with a lid. Add a couple of tablespoons of water and toss with oil if desired. Microwave on high for 5-6 minutes or until tender. Season to taste.