Cheesy Hashbrown Potatoes

Ingredients: 
 
 1 can (10.5 oz) condensed cream of mushroom soup 
 8 oz. sour cream 
 1 / 2 cup melted butter 
 1 package (30 oz.) frozen hashbrowns, thawed 
 1 medium onion, chopped 
 2 cups shredded Cheddar cheese 
 
 Instructions: 
 
 Preheat oven to 350 o 
 Stir the soup, sour cream, butter, potatoes, onion, and cheese in a 13x9 pan 
 Bake for 45 minutes