Preheat oven to 425°F and line a baking sheet with parchment paper.
Whisk flour, plant-based milk, water, and spices in a large bowl until smooth.
Toss cauliflower florets in the batter, ensuring an even coat.
Arrange florets on the baking sheet, leaving space between each piece.
Bake for 20 minutes, flipping halfway for even crispiness.
Melt vegan butter in a saucepan over low heat, then stir in hot sauce, maple syrup, and garlic powder.
Remove baked cauliflower from the oven and toss in buffalo sauce until fully coated.
Return to oven for 10 more minutes, allowing the sauce to bake in.
Let cool for a few minutes, then serve immediately with your favorite dip.