Potato Casserole - cooking recipe

Ingredients

1 (2 lb.) bag frozen hash browns
1 small onion, chopped
8 oz. container sour cream
1 (8 oz.) bag shredded Cheddar cheese
2 cans cream of mushroom soup
1/4 c. water
1 stick butter
1 large bag regular potato chips

Preparation

Melt butter in bottom of a 9 x 13-inch baking dish.
Mix first 6 ingredients together and pour on top of melted butter.
Spread out evenly.