Preheat oven to 350 degrees.
Grease 13x9 baking pan.
Brown sausage until thoroughly cooked.
Pour hash browns in separate mixing bowl
Add cheese to bowl (I prefer cheddar). Save 1/2 cup to add to the top of casserole at the end of baking time.
Once the sausage is browned, add to mixture and stir well.
Pour in bottom of 13x9 pan.
In separate bowl, add eggs, milk, and pepper, Whisk together.
Pour on top of hash brown mixture.
Put in oven and bake at 350 degrees for 35-40 minutes.
Check casserole. If it's not giggly or soupy, add remaining cheese on top and bake additional 5 minutes or until cheese is melted.