01 - Preheat oven to 425°F and line a baking sheet with parchment paper.
02 - In a large bowl, whisk flour, water, garlic powder, salt, and pepper to form a smooth batter.
03 - Dip each cauliflower floret into the batter, letting excess drip off, then coat with panko breadcrumbs.
04 - Arrange on the prepared baking sheet in a single layer. Bake for 25–30 minutes, flipping halfway, until golden and crispy.
05 - Meanwhile, in a small saucepan over medium heat, combine honey, soy sauce, garlic, and rice vinegar. Bring to a simmer.
06 - Stir in the cornstarch slurry and cook, stirring, until thickened (1–2 minutes). Remove from heat.
07 - Toss baked cauliflower in the honey garlic sauce until evenly coated. Transfer to a serving plate and sprinkle with green onions and sesame seeds.