
Step 3: Mix the Creamy Base
In a large mixing bowl, combine:
- Sour cream
- Cream of chicken soup
- Melted butter
- Garlic powder, salt, and pepper
Whisk together until smooth. Taste the mixture and adjust seasoning if needed.
Step 4: Add Cheese and Onions
Fold in 2 cups of shredded cheddar cheese and the finely chopped onion into the creamy mixture. Mix thoroughly so the cheese is evenly distributed. This ensures every bite is cheesy and flavorful.
Step 5: Combine with Hashbrowns
Gently fold in the thawed hashbrowns, making sure every piece is coated with the creamy mixture. Be careful not to overmix, or the potatoes may break down too much.
Step 6: Transfer to Baking Dish
Pour the hashbrown mixture into the prepared 9×13-inch baking dish and spread it evenly. Smooth the top with a spatula to ensure even baking.
Step 7: Prepare the Topping
In a small bowl, combine crushed cornflakes or breadcrumbs with 2 tablespoons of melted butter. Sprinkle this mixture evenly over the top of the casserole. The topping will turn golden brown and add a delightful crunch.
Step 8: Bake to Perfection
Place the casserole in the preheated oven and bake for 45–50 minutes, or until the top is golden brown and the edges are bubbling. For an extra crispy top, you can broil for 2–3 minutes at the end—just watch it carefully to prevent burning.
Step 9: Rest and Serve
Allow the casserole to rest for 5–10 minutes before serving. This helps it set slightly, making it easier to cut and serve.
Tips for Success
- Make ahead: Prepare the casserole the night before, cover it, and refrigerate. Bake it the next morning for a stress-free breakfast or brunch.
- Cheese variations: Mix cheddar with Monterey Jack, mozzarella, or pepper jack for a different flavor profile.
- Add-ins: For a heartier casserole, include diced cooked bacon, ham, or sautéed vegetables like bell peppers or mushrooms.
- Low-fat option: Use low-fat sour cream and reduced-fat cheese, but keep in mind the texture may be slightly less creamy.
Why You’ll Love This Hashbrown Casserole
This dish hits all the comfort food notes: crispy edges, creamy center, and a rich cheesy flavor. It’s versatile, simple, and perfect for feeding a crowd. Whether it’s a holiday breakfast, potluck, or a cozy weekend brunch, hashbrown casserole is a guaranteed crowd-pleaser.
If you want, I can also make a short, fail-proof version for beginners that uses just 5 ingredients and still tastes amazing. It’s perfect if you want something quicker without sacrificing flavor.
Do you want me to do that?








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