Prepare the Oven and Baking Surface: Preheat your oven to 450°F (230°C). Lightly grease a large baking sheet with cooking spray or line it with parchment paper to prevent sticking and ensure easy cleanup.
Make the Batter: In a spacious mixing bowl, whisk together the flour and water until smooth and lump-free. Stir in garlic powder, smoked paprika, salt, and black pepper to season the batter evenly.
Coat the Cauliflower Florets: Add the cauliflower florets to the batter bowl and gently toss until each piece is well coated with the seasoned batter, creating an even layer that will crisp up beautifully.
Arrange for Baking: Spread the battered cauliflower in a single layer on the prepared baking sheet, making sure to leave a little space between each piece. This helps them cook evenly and get crispy.
Initial Bake: Place the baking sheet in the preheated oven and bake for 20 to 25 minutes, turning the florets over halfway through to promote even browning and crispiness.
Prepare Buffalo Sauce: While the cauliflower bakes, whisk together the hot sauce, melted butter, and lemon juice in a small bowl until well combined and smooth.
Apply Buffalo Coating: Remove the cauliflower from the oven and brush each piece generously with the prepared buffalo sauce, coating all sides.
Final Bake: Return the sauce-coated cauliflower to the oven and bake for an additional 15 minutes, or until the edges turn golden brown and crispy.
Serve: Remove from the oven and serve immediately with ranch or blue cheese dressing alongside fresh celery and carrot sticks for a classic crunchy complement.