Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper and set it aside.
In a mixing bowl, whisk together the flour, plant-based milk, garlic powder, onion powder, paprika, salt, and pepper until smooth. This will be your batter.
In another mixing bowl, place the breadcrumbs and set aside.
Dip each cauliflower floret into the batter, ensuring it is thoroughly coated. Allow excess batter to drip off before rolling it in the breadcrumbs to coat fully.
Place the coated cauliflower wings onto the prepared baking sheet in a single layer.
Bake in the preheated oven for 20-25 minutes or until golden brown and crispy, flipping halfway through for even baking.
While the cauliflower wings are baking, prepare the Bang Bang sauce. In a small saucepan, combine the vegan mayonnaise, sriracha, maple syrup, and lime juice. Mix well and heat over low heat, stirring continuously until warm (about 2-3 minutes). Adjust the spiciness by adding more sriracha if desired.
Once the cauliflower wings are done, remove them from the oven and toss them in the Bang Bang sauce until fully coated.
Serve immediately, garnished with chopped green onions or sesame seeds if desired.