If using a whole head of cauliflower rather than the pre-riced kind, pulse it in a food processor until it resembles rice texture.
Heat a large pan over medium high heat. Add cauliflower and cook until tender, 5 minutes or so, stirring occasionally so that it cooks evenly and draining any liquid. Add coconut milk, salt, and pepper, stir to combine and cook until little liquid remains. Serve, garnished with cilantro.