My husband loved it so much after trying it that he asked me to whip up another batch for his office potluck. It only takes four simple ingredients.

This Southern-style 4-ingredient hashbrown casserole is rich, creamy, and full of cheesy goodness. Instead of using traditional condensed soup, it relies on a tangy, full-bodied sour cream base for its flavor and texture. When shredded hashbrowns are combined with plenty of sharp cheddar, the result is a soft, velvety center paired with a golden, slightly crisp cheese topping. What makes this dish stand out is how just a handful of ingredients come together to create a comforting, buttery side that works just as well for holiday mornings as it does for casual gatherings.

Southern 4-Ingredient Hashbrown Casserole

Ingredients

• 1 bag (30–32 oz) frozen shredded hashbrowns, thawed
• 3 cups sharp cheddar cheese, shredded and divided
• 2 cups sour cream
• 1 teaspoon kosher salt

Step-by-Step Instructions

Step 1: Prep the Potatoes
Preheat your oven to 350°F and lightly grease a 9×13-inch baking dish.

Tip: After thawing, press the hashbrowns with paper towels to remove excess moisture. Skipping this step can lead to a watery casserole instead of a creamy one.

Step 2: Make the Base
In a large bowl, mix the sour cream and salt until smooth. This will act as the creamy binder for the dish.

Step 3: Combine Ingredients
Add the dried hashbrowns to the bowl and toss until evenly coated. Fold in 2 cups of the shredded cheddar.

Tip: Taste the mixture at this stage and adjust seasoning if needed, keeping in mind the cheese will add more saltiness as it bakes.

Step 4: Assemble
Spread the mixture evenly into the prepared baking dish, gently pressing it into the corners. Top with the remaining 1 cup of cheese.

Step 5: Bake
Bake uncovered for 40–45 minutes, until the edges are bubbling.

Tip: For a crisp, golden top, move the dish to the upper rack for the last 5–10 minutes so the cheese browns nicely.

Step 6: Let It Rest
Remove from the oven and allow the casserole to sit for at least 10 minutes before serving.

Tip: Resting helps the casserole firm up, making it easier to cut into neat portions instead of serving a loose mixture.

Creamy, cheesy, and incredibly simple—this casserole shows how just a few ingredients can create a comforting and crowd-pleasing dish.