Easy Cheesy Southwest Breakfast Casserole

frozen O'Brien Style (with peppers and onions Hash Brown Potatoes, thawed)

small curd cottage cheese

fully cooked turkey breakfast sausage (chopped into small pieces)

shredded sharp cheddar cheese (reserve about 2-3 TBS for topping)

shredded Pepper-jack cheese

finely chopped onion

large eggs (beaten)

salt and pepper (to your liking)