Wash and dry the cauliflower. Cut it into bite-sized florets, ensuring they are evenly sized for consistent cooking.
In a large bowl, whisk together rice flour, cornstarch, salt, pepper, and water until a smooth, thick batter forms.
Coat each cauliflower floret in the batter, ensuring it's fully covered. Gently shake off any excess before arranging the florets on a lined baking sheet.
Air Fryer Instructions: Preheat the air fryer to 400°F (200°C). Arrange the florets in a single layer and cook for 15 minutes, flipping halfway through.
Oven Method: Preheat the oven to 425°F (220°C). Place the florets on a lined baking tray and bake for 25-30 minutes, turning them halfway through for even crisping.
In a small bowl, mix vegan mayonnaise, sriracha, garlic powder, and maple syrup until well combined. Sample the flavor and tweak the spice or sweetness to your liking.
Drizzle the bang bang sauce over the crispy cauliflower or serve it on the side as a dipping sauce. Top with sliced green onions, sesame seeds, or fresh cilantro to enhance the flavor.