Preheat oven to 425F.
In a large mixing bowl, combine the ground chicken, onion, celery, carrots, blue cheese and grill seasoning. Mix everything together and portion the mixture out into meatballs about the size of a golf ball. Roll each meatball in the crushed corn flakes (give them a little press to make sure they stick to the outside) and arrange them on a baking sheet. Bake until cooked through, about 15 minutes.
While the meatballs are cooking, place a small pot over medium heat and melt the butter. Sprinkle the flour over the butter and cook for about 1 minute. Whisk the chicken stock into the mixture and bring up to a bubble. Simmer the sauce until thickened, 2-3 minutes, and then stir in the hot sauce (stand back as you dont want the fumes to burn your sinuses). Season the sauce with a little salt and pepper and reserve warm.
Serve the meatballs with the buffalo dipper alongside.