Cheesy Hash Brown Casserole is a rich, creamy side made with frozen hash browns, cheddar, sour cream & crispy onions. Perfect for holidays & gatherings!
Preheat and Prepare. Preheat oven to 375°F/190°C. Grease the bottom and sides of a 13” x 9” baking dish.
Whisk Together. In a medium-sized bowl whisk together the condensed soup, sour cream, and black pepper. Set aside for later.
10.5 Ounces Condensed Cream of Chicken Soup, 8 Ounces Sour Cream, ¼ Teaspoon Black Pepper
Mix. Combine hash browns and grated onion in a large bowl. Add the melted butter and mix well.
36 Ounces Frozen Hash Brown Potatoes, ½ Cup Grated Yellow Onion, ½ Cup Salted Butter
Stir In. Stir in 2 cups of the shredded cheddar cheese, reserving the rest of the cheese for later.
8 Ounces Shredded Cheddar Cheese
Combine. Add the soup and sour cream mixture, and fold and stir until all is well combined.
Bake. Spoon the casserole into the prepared baking dish, smooth the top with the back of a spoon, and cover with aluminum foil. Bake for 1 hour and 15 minutes or until hot and bubbling.
Topping. Remove the foil from the casserole and sprinkle with the remaining cheese and crispy fried onions. Return to oven, uncovered, and bake for another 10 to 15 minutes or until cheese is melted and the onions are golden brown.
1 Cups Crispy Fried Onions
Notes
My Top Tips♡ The hash browns must be at room temperature and thoroughly thawed for the casserole to combine easily and bake up hot and bubbling in the time stated.Make-Ahead, Storage, & Reheating InstructionsMake-Ahead: You can fully assemble this Cheesy Hash Brown Casserole a day before serving it and bake it the next day. Simply cover the top with aluminum foil and keep it in the refrigerator. Allow the casserole to come to room temperature before baking.Storage: This casserole can be stored in an airtight container in the refrigerator for up to 5 days.Reheating: You can reheat portions of it in the microwave or on the stove in a skillet with a small amount of water added. Leftovers can be refrigerated for up to a week or frozen for up to a month if stored in an airtight container.