Pre-heat oven to 425. Line a jelly roll pan (cookie sheet with sides) with aluminum foil. Place a cooking rack in/on cookie sheet. Spray baking rack with non stick spray.
Cut head of cauliflower into chunks or bite size florets.
In a mixing bowl, combine flour, milk, garlic powder, pepper and oil. Whisk together.
Add cauliflower to flower and milk mixture. Toss and coat completely.
Using a fork or fingers, place cauliflower on top of rack. Discard excess milk and flour mixture. Bake for 15 min.
In a mixing bowl, pour in about 1/2 cup of Buffalo sauce. Then add the baked cauliflower and toss in the Buffalo sauce. Add more sauce as needed. Coat completely. Using fork or fingers, place cauliflower back on rack and back for 5-8 min longer.
Serve with Blue Cheese Dressing, Ranch Dressing or serve as is.