Wash and thoroughly dry cauliflower, then remove all greens.
If using a box grater, cut the cauliflower into large chunks and use the medium-sized holes (the side commonly used to grate cheese), to grate into "rice." If using a food processor, cut into small pieces and use the grater attachment to grate the cauliflower into "rice."
Transfer to a clean towel or paper towel and press to remove any excess moisture, to prevent sogginess.
Sauté riced cauliflower in a large skillet over medium heat in 1 Tbsp oil. Cover with a lid so the cauliflower steams and becomes more tender. Cook for a total of 5-8 minutes, then season as desired with salt and pepper.