Step 1

Preheat oven to 350 degrees F.

Step 2

Spray a 9x13 pan with nonstick spray.

Step 3

Break the frozen hash browns up in the bag.

Step 4

In a large bowl combine the onion, 1 cup of cheese, milk, cream of chicken soup and sour cream. Stir to combine.

Step 5

Mix in the hasbhrowns and stir to coat.

Step 6

Pour into a 9x13 pan. Top with the remaining cheese.

Step 7

Cover with foil and bake in the preheated oven for 45-50 minutes.

Step 8

Remove the foil and bake for 5-10 minutes to brown the the cheese is slightly.