My grandmother brought this over for Sunday dinner and we devoured it. Just 4 ingredients for the creamiest side dish ever.

This slow cooker 4-ingredient cheesy scalloped potatoes recipe is the kind of comforting side dish that feels like a hug from someone who loves you. It reminds me of the simple, no-fuss dishes our Midwestern grandmothers would bring over for Sunday dinner—nothing fancy, just honest ingredients that turn into something creamy, cozy, and completely devourable. With just potatoes, cream, cheese, and a little onion soup mix for big flavor, you can toss everything into the slow cooker and let it bubble away while you focus on the rest of the meal or enjoy your family. By the time dinner rolls around, you’ll lift that lid to find tender, pale yellow potato slices nestled in a rich white cream sauce, topped with gooey, golden-brown cheddar and those irresistible crispy edges everyone fights over.

These cheesy scalloped potatoes are rich and comforting, so they pair beautifully with simple mains like roast chicken, baked ham, meatloaf, or grilled pork chops. I like to add something fresh and crisp on the side, such as a green salad with a tangy vinaigrette or steamed green beans with a squeeze of lemon, to balance the creaminess. Warm dinner rolls or crusty bread are great for scooping up the extra sauce. For a Sunday-style spread, serve them alongside a simple veggie tray and a fruit salad so there’s a little something for everyone at the table.

Servings: 8

3 pounds russet or Yukon Gold potatoes, peeled and very thinly sliced

Lightly grease the inside of a 5- to 6-quart slow cooker with cooking spray or a little butter to help keep the potatoes from sticking and to make cleanup easier.

In a medium bowl or large measuring cup, whisk together the heavy cream and the dry onion soup mix until the soup mix is evenly distributed and no big clumps remain. This is your simple, super-flavorful sauce.

Peel the potatoes and slice them very thinly, about 1/8 inch thick. The thinner the slices, the more tender and “scalloped” they’ll be. If you have a mandoline, this is a good time to use it; otherwise, just take your time with a sharp knife.

Spread about one-quarter of the sliced potatoes in an even layer on the bottom of the slow cooker. It’s okay if they overlap; you just want a fairly even layer so they cook consistently.

Sprinkle about one-quarter of the shredded cheddar cheese over the potatoes, making sure to scatter it to the edges for those crispy browned bits later.

Drizzle about one-quarter of the cream and onion soup mixture over the cheese and potatoes, trying to cover as much of the surface as you can so the sauce seeps down between the slices.

Repeat the layers—potatoes, cheese, then cream mixture—three more times, ending with a generous layer of cheese on the very top. Don’t press down too hard; you want a little space for the cream to bubble up around the potatoes as they cook.

Cover the slow cooker with the lid and cook on HIGH for 3 1/2 to 4 hours, or on LOW for 6 to 7 hours, until the potatoes are very tender when pierced with a fork and the cream sauce is bubbly around the edges.

For that golden, bubbly top like a classic oven-baked scalloped potato dish, carefully remove the ceramic insert from the slow cooker (if it’s oven-safe) once the potatoes are done. Place it under the broiler on the top rack of your oven for 3 to 5 minutes, watching closely, until the cheese on top is melted, browned, and a little crispy around the edges. If your insert isn’t broiler-safe, you can skip this step; the potatoes will still be creamy and delicious.

Let the potatoes rest, uncovered, for about 10 minutes before serving so the sauce can thicken slightly and the layers hold together when you scoop. Serve straight from the slow cooker insert, and be ready for everyone to go back for seconds.

For picky eaters or kids who are unsure about onion flavor, you can swap the onion soup mix for a packet of ranch seasoning or use only half a packet of onion soup mix for a milder taste. If you prefer things a little lighter, you can use half-and-half instead of heavy cream, though the sauce will be slightly less thick and rich. For extra cheesiness, mix in a cup of mozzarella or Monterey Jack with the cheddar. If your family likes a bit of color, sprinkle chopped fresh parsley or sliced green onions on top just before serving. To stretch the recipe for a crowd, you can add an extra pound of potatoes and a splash more cream, then bump up the cook time by 30–45 minutes. For make-ahead prep, slice the potatoes and store them in cold water in the fridge for up to 4 hours, then drain and pat dry before layering. If you want to add protein without changing the spirit of the dish too much, you can sprinkle a little cooked, crumbled bacon between the layers—just keep in mind this technically adds a fifth ingredient. Finally, if your slow cooker runs hot and the edges brown too quickly, you can give the potatoes a gentle stir about halfway through cooking to pull the crispy bits into the center and keep everything cooking evenly.