Au Gratin Hash Brown Casserole
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Category
Side Dish
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Cusine
American
What do you need?
How to make?
Ingredients
1
4 Tbsp butter
1/2 cup finely chopped yellow onion
1/4 cup all-purpose flour
2 3/4 cups milk
1 1/2 cups shredded sharp cheddar cheese
1/2 cup finely shredded parmesan cheese
1 cup sour cream
Salt and freshly ground pepper
4 cups cornflakes
3 Tbsp butter
1 1/2 Tbsp chopped fresh parsley
Directions
Preheat oven to 350 degrees. Melt 4 Tbsp butter in a large saucepan over medium heat. Add onion and saute until softened, about 5 - 6 minutes. Add in flour and cook stirring constantly, 1 minute. While whisking pour in milk then cook stirring constantly until mixture comes to a boil. Remove from heat, add in cheddar cheese and parmesan cheese and stir until melted. Stir in sour cream. Season mixture with salt and pepper to taste . Place hash browns in a large mixing bowl then pour in milk mixture and toss to evenly coat. Transfer to a 13 by 9-inch baking dish and spread into and even layer. Place cornflakes in a gallon size resealable bag, seal bag and crush with a rolling pin to roughly pebble size bits. Add 3 Tbsp melted butter to cornflake mixture then seal bag and toss to evenly coat with butter. Sprinkle cornflake mixture evenly over casserole. Bake in preheated oven until hot throughout, about 40 - 50 minutes. Garnish with parsley and serve warm.
