We found this recipe a few weeks ago in the latest issue of Family Fun and have already made it a couple of times. I keep forgetting to buy fluff, so I've been melting marshmallow's rice krispy treat style with a little bit of butter. They end up slightly chewy and I think better than the fluff!
I saw this recipe on the Food Network and it was super yummy. Even Brian, who doesn't eat brocolli or cauliflower, liked it! It's like a cauliflowerly mac and cheese. I used mozzarella instead of gruyere and would use less red pepper flakes next time. It was quite spicy!