Step 1

Thaw bag of hash browns.

Step 2

Preheat the oven to 350 degrees F and lightly grease a 9 x 13-inch baking dish.

Step 3

Melt 2 Tablespoons of butter in a small skillet over medium heat.

Step 4

Add the onion. Sauté for 3-5 minutes until translucent and fork tender.

Step 5

Transfer onion to a bowl with the thawed hash browns, soup, cream, shredded cheese, dry mustard powder, garlic powder, salt, and black pepper and stir.

Step 6

Transfer potatoes to 9x13 dish and spread in an even layer.

Step 7

Melt the remaining 3 Tablespoons butter. Mix with the corn flakes cereal and sprinkle on top of the potatoes in an even layer.

Step 8

Bake for 30-40 minutes or until golden brown and bubbly.

Step 9

Best when served warm.