Easy 4-Ingredient Hash Brown Potato Casserole

Looking for a guaranteed crowd pleaser at your next family get-together? Then this oven baked four ingredient hash brown potato casserole is a recipe that you absolutely must try. It’s the perfect combination of tender potatoes swimming in a gooey cheese sauce – it’s pure comfort food at its best.

This old-fashioned recipe has been a staple of holiday meals and potluck sides since the 1970s because it’s virtually impossible to mess up. I use this simple side dish on repeat because it goes with just about anything you’re serving for dinner. No need to waste time peeling and boiling potatoes when you can achieve this amazing result by using frozen hash browns. It only takes 5 minutes to assemble and the rest of the work happens in the oven, giving you more time to enjoy the company of your guests.

The very best part about this hash brown casserole is the crispy cheese crust that forms along the edges of the pan. It’s deliciously crunchy on top and soft and creamy in the middle. Grab a big spoon because everybody will be scraping their plates clean!

Why You Will Love This Recipe

This recipe is a lifesaver during the busy holiday season because you don’t have to make a roux or stand around stirring a messy pot on the stove. All you need to do is combine the ingredients in a large mixing bowl and stir. The sour cream and condensed soup help the shredded potatoes cling together, resulting in a thick, creamy and luscious casserole every time.

What I really love about this savory potato bake is that you can make it ahead of time and refrigerate it until you’re ready to pop it in the oven. I’ll often make this dish the day before a party or holiday dinner, then refrigerate it overnight. It’s great to pull out of the fridge and stick in the oven while you finish cooking the rest of the meal.

What You Need

To prepare this simple yet nostalgic casserole, you’ll need a bag of frozen shredded hash browns, sour cream, condensed cream of chicken soup, and shredded sharp cheddar cheese.

Frozen Hash Browns

The easiest way to make this recipe is to start with a large bag of frozen hash browns. Make sure you let them thaw overnight in the fridge first or the casserole will turn out too wet. You can also use frozen diced potatoes if you prefer larger chunks in your casserole.

Sour Cream

A dollop of regular, high-fat sour cream is what makes this dish tangy and decadent. It also brings a moistness that helps to soften the potatoes and cheese while baking. If you’d like to cut back on the fat content, you can use regular Greek yogurt instead. I find it tastes just as good.

Cream of Chicken Soup

The condensed cream of chicken soup helps to bind the dish and adds an extra savory note. It really makes the potatoes taste more flavorful than they normally would. Feel free to swap the soup for cream of mushroom or celery if you’re making a vegetarian version of this recipe.

Sharp Cheddar Cheese

Shredded sharp cheddar helps give this casserole a wonderful flavor and color. Be sure to grate your own cheese as the pre-grated versions have a different texture. To change up the flavors, you could use pepper jack or Gruyere cheese.

How to Make Hash Brown Potato Casserole

To make this hash brown potato casserole, begin by getting out a large mixing bowl and spatula.

Prep the Dish

Turn your oven to 350°F and spray a 9×13″ glass baking dish with non-stick cooking spray. Make sure that the hash browns have completely defrosted so that you don’t end up adding too much water to the dish.

Mix the Base

Combine the sour cream, cream of chicken soup, and half of the shredded cheddar cheese in a large bowl. The ingredients should be mixed well before you add the potatoes.

Fold in Potatoes

Add the thawed shredded hash browns to the bowl and gently fold the ingredients together with a large rubber spatula. Continue folding until all of the potatoes are coated in the sauce.

Spread and Top

Scoop the mixture into the prepared baking dish and spread it out evenly. Sprinkle the remaining cheese evenly over the top of the potatoes.

Bake and Serve

Bake for 45 to 50 minutes, until hot and the cheese is melted and golden brown. Let sit for 10 minutes before serving.

My Top Recipe Tips

To get the perfect texture, you have to drain as much liquid as possible from your shredded hash browns. I usually wrap my thawed hash browns in a towel and squeeze it tightly over the sink to get out all the moisture. 

Crunchy topping lovers will want to add a handful of crushed Ritz crackers or cornflakes to this recipe. Stir 2 tbsp melted butter into the crushed cereal or crackers and add them to the dish during the last 15 minutes of baking. 

Don’t be tempted to cut corners on the 10-minute resting time once you remove the baked dish from the oven, no matter how good it smells. That’s the key to making sure all that starchy goo has a chance to thicken up and hold its shape, yielding neat scoops rather than soup.

Storage and Reheating

• Store: Leftovers can be stored in an airtight container in the refrigerator for up to 4 days.
• Freeze: The unbaked casserole can be wrapped tightly in foil and frozen for up to 3 months; let thaw overnight in the fridge before baking.
• Reheat: Reheat leftovers in the microwave or in a 350°F oven until warmed through.

Serving Suggestions

• Served with a glazed, thick cut holiday ham.
• With crispy, golden oven baked fried chicken and green beans.
• Accompanied by a large juicy grilled ribeye.
• Topped with a perfectly fried egg for a lavish weekend brunch.

Frequently Asked Questions

Can I make this with freshly grated potatoes?

Yes, you can use fresh potatoes, just be sure to boil them until they are par-cooked before shredding. The raw potatoes won’t fully cook in the oven and will turn gray.

Can I assemble this in the slow cooker instead?

Yes! Simply stir all ingredients together and pour into a greased slow cooker. Cook on low heat for 4 hours, or until crispy around the edges.