Using a food processor fitted with the steel blade, or a box grater, finely shred cauliflower (there should be about 6 cups). In a large cast-iron or other heavy skillet, heat butter, oil and seasoning blend over medium-high heat. When butter is melted, stir in cauliflower, working in batches if necessary. Cook, uncovered, until tender, 10-15 minutes, stirring occasionally (there should be about 4 cups cauliflower "rice"). Add cheese; stir until well combined.