Thaw hash browns/potatoes overnight in fridge- ensure fully thawed before cooking in oven.
preheat oven to 350F. lightly butter a 9x13 dish
in medium bowl, stir together onion, soup, sour cream, cheese spread and melted butter. mix well.
add in the thawed potatoes. stir until combined.
spread evenly in prepared pan. top with shredded cheese
bake for 45 min until the top is crispy and golden brown around the edges.