Preheat oven to 450ºF
In a medium-sized bowl, combine flour, water, garlic powder, and salt
Whisk together until combined and breadcrumb-like consistency batter
Toss cauliflower into batter, making sure to coat each piece completely, then place battered cauliflower on a lightly greased, nonstick baking sheet
Bake for 15 minutes, tossing halfway through
In the meantime, combine melted butter and hot sauce in a large bowl, regularly stirring
When cauliflower is done, remove it from oven and gently toss it in hot sauce mixture
Place cauliflower back on baking sheet and cook for an additional 25 minutes until it becomes crispy
Allow cauliflower to cool for 15 minutes before serving