* Before beginning, make sure the frozen potatoes are completly thawed. Thaw in the fridge overnight OR leave out at room temperature for up to 2 hours before beginning.
Preheat the oven to 350℉. Spray a 9x13 baking dish with cooking spray. Set aside.
In a large mixing bowl, add the thawed hash browns, sour cream, cream of chicken soup, melted butter, onion powder, kosher salt, and shredded cheddar cheese. Mix until well combined.
1 bag (32 oz) frozen southern hash browns, 1 container (16 oz) sour cream, 1 can (10.5 oz) cream of chicken soup, 1/2 cup (1 stick) butter, 1½ teaspoons onion powder, 1 teaspoon kosher salt, 2 cups shredded mild cheddar cheese
Spread the potato mixture evenly into the prepared baking dish.
In a separate bowl, mix together the crushed crunchy cornflakes with the melted butter. Stir until well combined and all the cornflake crumbs are coated. Sprinkle the cornflake mixture evenly over top of the potatoes.
3 cups cornflakes, 4 tablespoons butter
Bake for 45-50 minutes or until the potatoes are hot and bubbly, and the top is golden brown.
Allow the casserole to cool for a few minutes before serving warm. Enjoy!