For the casserole
01 -
1 tablespoon unsalted butter, for the onion
02 -
1/2 cup (75 g) finely chopped yellow onion
03 -
1 (30 oz/850 g) bag frozen shredded hash browns, thawed and patted dry
04 -
1 (10.5 oz/298 g) can condensed cream of mushroom soup
05 -
1 1/2 cups (360 g) sour cream
06 -
4 tablespoons (56 g) unsalted butter, melted
07 -
2 cups (225 g) shredded sharp cheddar cheese
08 -
1 cup (115 g) shredded Monterey Jack cheese
09 -
1 teaspoon garlic powder
10 -
1 teaspoon kosher salt
11 -
1/2 teaspoon black pepper
For the topping
12 -
2 1/2 cups (70 g) cornflakes, lightly crushed
13 -
3 tablespoons (42 g) unsalted butter, melted
14 -
1 tablespoon chopped parsley or chives, optional