Classic au Gratin Potatoes

4 cups (16 oz.) frozen hash browns
1 can cream of chicken soup
1 - 8 oz package shredded cheddar & American cheese blend
1/2 cup sour cream
1/3 cup chopped green onions

Mix all ingredients.  Spoon into a 2 quart casserole dish.  Bake at 350 degrees for 50 minutes.

Note:  This works best if the hash browns are thawed and you use a shallow casserole dish.  Don't forget to spray it with Pam, or you'll be scrubbing dishes all night.