Cheesy O'Brien Potatoes - cooking recipe

Ingredients

1 (10 oz.) pkg. frozen O'Brien hash brown potatoes
mayonnaise
sour cream
shredded Cheddar

Preparation

Mix potatoes with mayonnaise and sour cream;
use as much as needed to mix well.
Pour into flat casserole.
Cover with shredded cheese.
Bake 1 hour at 350\u00b0.