Preheat your oven to 425°F (220°C).

Cut the cauliflower into uniform bite-sized florets and rinse them.

Combine flour, cornstarch, garlic powder, onion powder, smoked paprika, cayenne pepper, salt, and black pepper in a mixing bowl.

Gradually add water or vegetable broth, whisking until a thick batter forms.

Dip each floret into the batter, ensuring they're evenly coated, then lay them on a parchment-lined baking sheet.

Drizzle coated cauliflower with olive oil and bake for 25-30 minutes, flipping halfway.

Remove from the oven, and optionally sprinkle with fresh parsley before serving.