Potatoes O'Brien

A new take on potato casserole! Thanks TX.                                                                                   

1/2 cup butter (melted)
1 can cream of mushroom soup
1 envelope dry onion soup mix
1 (8 ounce) container sour cream
1 bag frozen hash brown potatoes, thawed
2 cups sharp cheddar cheese, grated & divided




Directions
 Mix the first 4 ingredients together in large mixing bowl.
Add thawed potatoes and 1 cup of the grated sharp cheddar cheese to mixture and mix together thoroughly. 
Spread into 9 x 13 casserole dish. 
Sprinkle top with remaining cup of cheese and bake at 350 degrees for 1 to 1/2 hours.