Tanya's Breakfast Casserole

3 cups shredded hashbrowns/ 3/4 cup shredded cheese
1 cup cooked diced ham/ 1/4 cup chopped green onions
4 eggs/ 1 can evaporated milk/ salt and pepper

Place potatoes in a 9x13 in pan. Sprinkle with cheese, ham, and onions. Beat eggs, milk, salt, and pepper. Pour over the top of potato mixture. Do not mix. Cover and refridgerate overnight. Bake at 350 for 1 hour. Serve while hot. It is sort of a breakfast quiche. This is soooooo good! We have this every Christmas for breakfast with blueberry muffins! Is is so easy and so good!
note: I also have put bacon or sausage in it but it really is better with ham.