Cheesey Hash Brown Potato Casserole

2 lbs. hash browns, defrosted
1/2 c. melted butter
1 tsp. salt
1/4 tsp. pepper
1/2 c. chopped onion
1 can cream of chicken soup
1 c. milk
1 c. sour cream
2 c. grated sharp cheese (Colby or cheddar)

Mix above ingredients and put in a 9"x13" pan.

TOPPING:

2 c. crushed corn flakes (can use Ritz crackers)
1/2 c. melted butter

Melt butter and add corn flakes to mix. Sprinkle topping over potatoes and bake at 350 degrees for 45 minutes.