Golden Treasure: Just 4 ingredients. My grandfather taught me to make this incredibly moist dessert and it disappears instantly every time.

This slow cooker 4-ingredient golden butter cake is the kind of cozy, no-fuss dessert my grandfather used to make on chilly Midwestern evenings. He loved recipes that were simple but felt like a little treasure on the table, and this one fits that perfectly. With just a boxed yellow cake mix, real butter, brown sugar, and milk, you end up with an incredibly moist, golden cake that practically scoops like a warm pudding. It bakes low and slow right in the slow cooker, filling the house with a buttery, caramel scent and disappearing almost as soon as I lift the lid.

Serve this golden butter cake warm, straight from the slow cooker, scooped into bowls so everyone gets some of the fluffy center and the caramelized buttery edges. It’s wonderful on its own, but a scoop of vanilla ice cream or a dollop of whipped cream melts into the warm cake and makes it extra special. For a simple family night, pair it with coffee or hot cocoa for the grownups and cold milk for the kids. If you’re serving guests, you can sprinkle a tiny bit of powdered sugar on top just before serving and bring the slow cooker insert right to the table for a cozy, help-yourself dessert.

Servings: 8

1 box (15.25 oz) yellow cake mix

Grease the inside of a 5- to 6-quart slow cooker generously with butter, making sure to coat the bottom and about halfway up the sides so the cake doesn’t stick and the edges can caramelize nicely.

In a medium bowl, whisk together the brown sugar and melted butter until the mixture looks smooth and glossy. Pour this buttery brown sugar mixture evenly over the bottom of the greased slow cooker. This will turn into a rich, caramel-like layer as it cooks.

In a large mixing bowl, add the dry yellow cake mix. Pour in the milk and stir with a spoon or spatula just until the batter is smooth and no dry pockets of mix remain. The batter will be fairly thick but pourable; avoid overmixing so the cake stays tender.

Carefully pour the cake batter over the buttery brown sugar layer in the slow cooker. Do not stir. Gently smooth the top with a spatula so it’s level, but leave the layers as they are. As it cooks, the bottom will become gooey and caramelized while the top bakes into a golden, fluffy cake.

Place a clean kitchen towel or a double layer of paper towels over the top of the slow cooker insert, then put the lid on. This helps catch excess moisture so the top of the cake can set and form a cracked golden crust instead of getting soggy.

Cook on HIGH for 2 to 2 1/2 hours, or on LOW for 3 1/2 to 4 hours, without lifting the lid during the first 2 hours. The cake is done when the top is puffed, golden, and cracked, the edges are bubbling with buttery caramel, and a toothpick inserted into the center comes out mostly clean with just a few moist crumbs (a little gooeyness near the edges is normal and delicious).

Turn off the slow cooker and remove the lid and towel. Let the cake rest in the slow cooker for about 10 to 15 minutes so it can set slightly while still staying warm and steamy. You’ll notice the interior stays very moist and almost pudding-like under the golden top.

To serve, use a large spoon to scoop the cake into bowls, making sure each serving includes some of the tender, fluffy middle and the buttery, caramelized edges from the bottom and sides. Serve warm, and store any leftovers covered in the refrigerator for up to 3 days; reheat gently in the microwave or on LOW in the slow cooker until warmed through.

For picky eaters, you can keep the cake very plain and serve toppings on the side: small bowls of chocolate chips, sprinkles, or mini marshmallows let everyone build their own bowl. If you prefer a slightly lighter version, you can use 2% milk instead of whole milk and reduce the butter to 3/4 cup; the cake will still be moist, just a bit less rich. For a deeper caramel flavor, use dark brown sugar and let the cake cook toward the longer end of the time range so the edges really bubble and brown. If your slow cooker tends to run hot, check for doneness about 15 minutes early the first time you make it so it doesn’t overbake. To dress it up for company, add a pinch of cinnamon or a tiny splash of vanilla extract to the batter (this technically adds more ingredients, so I treat them as optional, not required). You can also line the bottom of the slow cooker with a parchment circle if you’re worried about sticking, but I’ve found a generous buttering works just fine. This recipe scales well: in a larger slow cooker, you can use 1 1/2 boxes of cake mix and adjust the milk and butter up proportionally, then add a little extra time, keeping an eye on the cracked golden top as your cue.