Preheat oven to 450°F (232°C) and line a baking sheet with parchment paper.

In a large bowl, mix flour, garlic powder, paprika, salt, and pepper. Gradually add water until batter forms.

Dip cauliflower florets in the batter until well coated; place on the baking sheet in a single layer.

Drizzle with olive oil and bake for 20-25 minutes or until golden brown.

While baking, melt butter in a saucepan over low heat and stir in buffalo sauce.

Once baked, toss cauliflower in the buffalo sauce mixture and serve immediately with celery sticks and ranch dressing.