In a medium saucepan, cook the chicken over medium heat until no longer pink.
Preheat the oven to 375˚F.
In a large bowl, mix together the chicken, cauliflower, hot sauce, cream cheese and 1 cup cheese.
Spread the mixture in a 9x13 inch baking pan. Sprinkle the remaining cheese on top.
Cover with foil, and cook in the preheated oven for 25 minutes.
Remove foil and cook uncovered for 10 minutes. Garnish with additional hot sauce and green onions.