Preheat oven to 425 F. Grease or line a baking tray with foil. Set aside.
Prep The Cauliflower
Wash and completely dry the cauliflower. Cut the cauliflower into bite-sized pieces, cutting off as much stem as possible without making the florets break apart into tiny pieces. Set aside.
Coat the Cauliflower
Using three separate bowls, place the crushed croutons in one bowl, the flour into the other bowl and the egg into the last bowl.
To bread the cauliflower, using one hand, first toss the cauliflower completely and VERY lightly into the flour, shaking off excess and then place cauliflower into the egg bowl.
Using your other hand, toss the cauliflower into the egg mixture until none of the flour is visible, shaking off the excess. Place cauliflower into the crouton bowl.
Using your dry hand, coat the cauliflower with the croutons, packing it on so that it sticks until completely coated. Shake off the excess.
Place on the prepared baking sheet.
Bake for 12 minutes.
While the cauliflower is baking, make the sauce by mixing buffalo sauce, butter and garlic powder into a large bowl. Set aside.
When the cauliflower comes out of the oven, toss them one at at time in the the buffalo sauce using a slotted spoon. Allow the excess sauce to drip off. Place them back on the baking sheet.
When all the cauliflower has been coated allow them to sit on the baking sheet for about 10-15 minutes to allow the coating to dry a little.
Broil on low for 4-5 minutes until crisp. Keep an eye on it, since broiling happens fast.
Serve immediately with carrot & celery sticks.
Serve with additional buffalo sauce, ranch or blue cheese dressing (vegan) for dipping.