Start by washing and cutting your cauliflower into evenly sized florets. Keeping them similar in size helps them cook evenly. Pat them dry so the batter sticks better.
In a mixing bowl, whisk together flour, plant milk, garlic powder, and salt until smooth. The batter should be thick enough to coat but not overly heavy. Adjust with a little more milk if needed.
Dip each cauliflower piece into the batter, making sure it’s fully coated. Then roll it in breadcrumbs for that extra crunch. Place each coated floret on a lined baking sheet.
Lightly spray the florets with oil and bake in a preheated oven at 425°F (220°C). Bake for about 20–25 minutes, flipping halfway through, until golden and crispy.
While the cauliflower bakes, mix vegan mayo, sweet chili sauce, and sriracha in a bowl. Taste and adjust spice level to your liking. The sauce should be creamy with a sweet-spicy kick.
Once the cauliflower is done, toss it gently in the sauce or drizzle the sauce over the top. Serve immediately while it’s still crispy and warm.