Preheat oven to 375 degrees.
In a large bowl add the hash browns, riced cauliflower, cottage cheese, 1 cup sharp cheddar, seasoned salt, pepper, eggs, Greek yogurt, and chicken broth. Mix together VERY well.
Spray a 9x13 casserole dish well with cooking spray. Add cheesy potato mixture, and spread evenly into the dish. Top with the remaining ¾ cup sharp cheddar cheese. Spray top of the casserole with some more cooking spray to prevent cheese from sticking. Cover tightly with aluminum foil.
Bake for 40 minutes covered. Remove aluminum foil, turn the oven up to 425, and let the cheese brown up for another 15-20 minutes.
