My grandmother used to make this growing up, and it disappears fast every single time. It's unbelievably creamy and only needs 4 ingredients!

This oven baked 4-ingredient cheesy potato casserole is pure Midwest comfort and the definition of a family classic. My grandmother used to make it for every holiday, potluck, and random Sunday dinner, and it disappeared fast every single time. It’s unbelievably creamy, topped with a bubbly, golden layer of cheese, and somehow feels special even though it only uses four simple ingredients you probably already have on hand. It’s the kind of no-fuss, toss-it-in-the-oven recipe that works on busy weeknights but still feels nostalgic and cozy, just like something Grandma would pull out of the oven in a glass baking dish.

Serve this cheesy potato casserole hot, straight from the oven, when the edges are browned and the cheese is still melty. It’s perfect next to roasted or grilled chicken, pork chops, or meatloaf, and it fits right in with holiday ham or a potluck spread. Add something fresh and simple on the side, like a green salad, steamed green beans, or roasted broccoli, to balance the richness. Leftovers reheat well and make a great base for brunch—top a scoop with a fried egg and a little hot sauce for an easy morning-after breakfast.

Servings: 8

1 (32-ounce) bag frozen diced hash brown potatoes, thawed

Preheat your oven to 350°F (175°C). Lightly grease a 9x13-inch glass baking dish with cooking spray or a thin swipe of butter so the potatoes don’t stick.

In a large mixing bowl, stir together the condensed cream of chicken soup and sour cream until smooth and fully combined.

Add 1 1/2 cups of the shredded cheddar cheese to the bowl and stir until the cheese is evenly distributed in the creamy mixture.

Gently fold in the thawed diced hash brown potatoes, stirring until every piece is coated in the cheesy, creamy mixture. The mixture will be thick and chunky.

Transfer the potato mixture to the prepared glass baking dish and spread it out into an even layer, pressing lightly into the corners.

Sprinkle the remaining 1/2 cup shredded cheddar cheese evenly over the top of the casserole to create a cheesy layer that will brown and bubble in the oven.

Bake uncovered at 350°F (175°C) for 45–55 minutes, or until the casserole is hot and bubbly, the edges are browned, and the cheese on top is melted and golden. If you like extra browned edges and a deeper golden top, you can bake it for an additional 5–10 minutes.

Remove the casserole from the oven and let it rest for about 10 minutes before serving. This helps it set up a bit so it scoops neatly while still staying incredibly creamy inside.

To keep the spirit of the original 4-ingredient recipe, any extras are optional, but there are a few easy ways to tweak it once you’ve made the classic version. For a slightly lighter take, you can use light sour cream and a reduced-fat cream soup, though the texture will be a bit less rich. If you want more flavor without adding extra ingredients to the base, choose a very sharp cheddar or a smoky cheddar so the cheese really stands out. For a little color and texture, sprinkle chopped fresh chives, green onions, or parsley over the casserole right after baking—this doesn’t change the core recipe but makes it feel a bit more dressed up for company. To prep ahead, assemble the casserole up to the point of baking, cover tightly, and refrigerate up to 24 hours; when you’re ready to cook, let it sit at room temperature for about 20 minutes, then bake as directed, adding 5–10 minutes to the bake time if needed. Leftovers reheat well in the oven at 325°F, covered with foil until hot, or in the microwave in short bursts, and they’re great as a base for breakfast with eggs or as a quick side dish on busy nights.