HEAT a large pot filled with 2-3 cups of water over medium heat. Cut cauliflower into florets. Place cauliflower florets into water and bring to a boil. Reduce to simmer and boil 10 minutes to soften florets. Alternate cooking method: 7 minutes at high pressure in instant pot.
STRAIN and transfer florets to a large mixing bowl. Allow cauliflower to cool slightly for 5 minutes. Use a potato masher or fork to mash florets until slightly chunky. Add egg, green onion, ground pork and seasonings. Mix well to combine.
HEAT a large pan over medium heat. Spray liberally with nonstick cooking spray. Place fritters onto pan using a ⅓ cup measuring cup. Press down and shape gently with a spatula. Cook 4-5 minutes. Turn over and cook 4-5 minutes longer or until cooked through.