PREHEAT oven to 450°F. Mix flour, water, salt and garlic powder in a large bowl; stir until smooth. Add cauliflower, tossing gently until evenly coated with batter.@|ARRANGE cauliflower in single layer on large shallow baking pan sprayed with no stick cooking spray. @|BAKE 20 minutes or until golden brown. @|MIX RedHot Sauce and melted butter in small bowl. Drizzle evenly over cauliflower, turning to coat evenly.@|BAKE 10 minutes longer or until cauliflower is crispy, turning halfway through cooking. Serve with celery and blue cheese dressing, if desired.@|