Buffalo Chicken Meatballs with Blue Cheese Sauce

Name: Buffalo Chicken Meatballs with Blue Cheese Sauce
Ingredients: Nonstick cooking spray; 2 ounces blue cheese, coarsely crumbled; 1 cup whole buttermilk; 1/2 cup mayonnaise; 1/4 cup sour cream; 2 tablespoons lemon juice; 1 teaspoon garlic powder; Kosher salt and freshly ground pepper; 2 stalks celery; 1/2 small onion; 1/2 green bell pepper; 2 pounds ground chicken (not chicken breast); 1 cup dry breadcrumbs; 2 large eggs; 2 teaspoons Miss Brown’s House Seasoning (see recipe below); 1/2 cup (1 stick) unsalted butter; 1/4 cup hot sauce; 2 teaspoons Worcestershire sauce; Celery sticks; Chopped fresh flat-leaf parsley, for garnish; 1 teaspoon onion powder; 1 teaspoon sweet paprika; 1 teaspoon freshly ground black pepper; 1 teaspoon salt