Step 1

Move the oven rack to the middle position and preheat to 325 degrees F.

Step 2

Lightly grease a 13x9 baking dish with non-stick cooking spray.

Step 3

In a large bowl, mix together hashbrowns, soup, mayonnaise, sour cream, cheese, and seasonings until combined.

Step 4

Add the potato mixture to the prepared pan and spread into an even layer.

Step 5

In a medium microwave-safe bowl, melt butter. Add cornflakes and mix until the cornflakes are coated in butter.

Step 6

Evenly distribute the topping over the hashbrown mixture.

Step 7

Bake for 75-90 minutes or until golden brown and bubbly.

Step 8

Serve immediately.