Ingredients
Method
- Preheat the oven to 350°F (175°C) and grease a 9x13-inch baking dish.
- Melt 1 tbsp butter in a small skillet over medium heat. Cook the onion until soft, about 5 minutes. Melt the remaining 7 tbsp butter.
- In a large bowl, stir the sour cream, soup, cheddar, onion, 4 tbsp melted butter, garlic powder, salt and pepper. Fold in the hash browns. Taste and adjust the salt.
- Spread the mixture evenly in the prepared dish.
- Toss the cornflakes with the remaining 3 tbsp melted butter and scatter over the top.
- Bake uncovered 45–55 minutes, until bubbling at the edges, hot in the center and deep golden on top. Tent with foil if the topping browns too fast.
- Rest 10 minutes before serving.
Notes
Butter: ½ cup (1 stick) total. Make ahead: assemble without the topping, cover and refrigerate up to 24 hours; top and bake from cold, adding 10–15 minutes. Storage: 4 days in the fridge or 3 months frozen. 8x8 dish: halve the recipe and bake 35–45 minutes. Let WPRM calculate nutrition.
