My aunt brought this side dish once and now she is not allowed to show up without it. Bubbling, golden, and takes only 4 ingredients.

This is the side dish my aunt brought to a family cookout once, and now she’s not allowed to walk through the door without it. It comes out of the oven in a glass baking dish, all bubbly and golden on top, with creamy sauce tucked between tender potato slices. The best part? It only takes four basic ingredients you can grab on your way home from work. No roux, no fancy cheese blends—just simple, cheesy comfort that fits right into a busy weeknight or a holiday spread.

These 4-ingredient cheesy scalloped potatoes are rich and comforting, so I like to pair them with something simple and protein-forward: roast chicken, baked ham, grilled pork chops, or even a pan-seared steak. Add a green vegetable—like steamed green beans, a tossed salad, or roasted broccoli—to balance out the creaminess. They also reheat well, so they’re perfect alongside leftover meatloaf or rotisserie chicken for an easy next-day dinner.

Servings: 8

2 1/2 pounds russet or Yukon Gold potatoes, peeled and very thinly sliced

Preheat your oven to 375°F (190°C). Lightly grease a 9x13-inch glass baking dish (a Pyrex-style dish works perfectly) with a bit of cream or a swipe of oil if you like, just to help with cleanup.

Peel the potatoes and slice them as thinly and evenly as you can, about 1/8 inch thick. A mandoline makes this fast, but a sharp knife works fine—just try to keep the slices uniform so they cook at the same rate.

In a medium bowl or large measuring cup, stir the heavy cream and kosher salt together until the salt is mostly dissolved. This seasons the whole dish without needing extra ingredients.

Layer about one-third of the potato slices evenly in the bottom of the prepared glass baking dish, slightly overlapping them like shingles. Sprinkle with about one-third of the shredded cheddar cheese.

Repeat with another one-third of the potatoes and another one-third of the cheese, building a second even layer. Finish with the remaining potatoes on top, saving the last third of the cheese for later.

Slowly pour the salted heavy cream evenly over the potatoes, tilting the dish slightly if needed so the cream runs down into the layers. The cream should come almost to the top layer of potatoes but not completely cover them.

Cover the dish tightly with foil and bake on the middle rack for 45–50 minutes, until the potatoes are mostly tender when pierced with a knife and the cream is starting to bubble around the edges.

Carefully remove the foil and sprinkle the remaining shredded cheddar cheese evenly over the top. Return the dish to the oven, uncovered, and bake for another 20–25 minutes, or until the top is deeply golden brown, bubbly, and the potatoes are very tender all the way through.

For an extra golden crust, you can switch the oven to broil for 1–3 minutes at the end—watching closely—until the cheese is deeply browned in spots and irresistibly bubbly.

Let the cheesy scalloped potatoes rest for at least 10–15 minutes before serving. The sauce will thicken slightly as it cools, and the layers will hold together better when you scoop it out of the glass baking dish.

If you want to keep the strict 4-ingredient magic but still play a little, you can swap the cheddar for another melting cheese: try a mix of cheddar and mozzarella for extra stretch, or use Gruyère for a slightly fancier, nutty flavor. You can also switch the heavy cream to half-and-half for a lighter texture, but the sauce won’t be quite as thick and rich. If you’re willing to bend the 4-ingredient rule at home, a small pinch of black pepper, garlic powder, or smoked paprika over each layer adds a ton of flavor with almost no effort. To make this more weeknight-friendly, slice the potatoes the night before, cover them with cold water, and store in the fridge; drain and pat dry before layering. The dish can also be assembled up to a day ahead: cover tightly with foil, refrigerate, then bake straight from the fridge, adding 10–15 minutes to the covered baking time. Leftovers reheat well in the oven, covered with foil, at 350°F until warmed through, or in the microwave in short bursts so the cheese doesn’t get rubbery.