Preheat your oven to 350 degrees F.
Prepare a 9x13 casserole dish with nonstick cooking spray.
In a large mixing bowl place frozen hash browns and minced onions and mix.
Add sour cream, cream of chicken soup, melted butter, salt, and 2 cups shredded cheese. Mix well then place your mixed ingredients into a 9X13 casserole dish.
Mix crushed cereal and melted butter together then sprinkle on the top of casserole.
Place in the oven to bake for 40-45 minutes.