My aunt made this for every holiday dinner growing up and we thought she slaved over it for hours. She finally told us her secret

This slow cooker 3-ingredient hot fudge pudding cake is exactly the kind of dessert that makes people swear you’ve been baking all day. My aunt served this at nearly every holiday dinner when I was growing up in the Midwest, and we all assumed it was some closely guarded, labor-intensive family recipe. Years later, she finally admitted the truth: it’s three pantry ingredients and a slow cooker doing all the work. The magic here is the self-saucing effect—while it cooks, a moist chocolate cake forms on top and a glossy hot fudge layer settles underneath, so you scoop straight from the crock into bowls with cake and sauce in every spoonful.

Serve this hot fudge pudding cake warm, straight from the slow cooker, spooned into small bowls or mugs so the cake and molten sauce stay together. A scoop of vanilla ice cream, lightly sweetened whipped cream, or a drizzle of cold heavy cream over the top gives a nice contrast to the warm chocolate. Coffee or espresso balances the richness, while a glass of cold milk is a nostalgic pairing. For a more festive presentation, sprinkle with a few chocolate shavings or crushed peppermint candies just before serving.

Servings: 8

1 (15.25 to 16 oz) box chocolate cake mix (any standard brand, regular or devil’s food)

Lightly coat the inside of a 4- to 6-quart slow cooker with nonstick cooking spray or a thin film of neutral oil to help prevent sticking and make cleanup easier.

In a large mixing bowl, whisk together the dry chocolate cake mix and the dry instant chocolate pudding mix until they are evenly combined and no streaks of lighter or darker powder remain.

Pour in the whole milk and whisk just until a smooth, thick batter forms and all of the dry mix is incorporated. The mixture will be looser than typical cake batter but thicker than standard pudding; avoid overmixing once it is smooth.

Pour the batter into the prepared slow cooker, scraping the bowl with a spatula so you get all of it into an even layer. The batter will look glossy and fairly fluid—this is what will create the cake layer on top and the hot fudge–style sauce underneath as it cooks.

Cover the slow cooker with its lid and cook on HIGH for 2 to 2 1/2 hours, or until the top looks set around the edges and mostly set in the center but still slightly glossy and soft. The cake should feel springy at the edges when gently pressed, while a spoon inserted into the middle will reveal a thick, pudding-like fudge sauce underneath.

Once done, turn the slow cooker to WARM and let the pudding cake stand, covered, for 10 to 15 minutes. This brief rest allows the cake layer to finish setting while the sauce stays molten and glossy underneath.

To serve, use a large spoon to scoop down through the cake layer and into the sauce, lifting out portions that include both cake and hot fudge. Serve immediately in bowls, with optional ice cream or whipped cream if desired. Keep any remaining cake on WARM for up to 1 hour for ongoing serving, then cool and refrigerate leftovers.

Because this dessert is so simple, a few small tweaks can make it feel customized for different occasions. For a mocha version, replace 1/2 to 1 cup of the milk with strong brewed coffee (cooled) to deepen the chocolate flavor and add a subtle coffee note. For a holiday twist, use a chocolate fudge cake mix and stir 1/2 teaspoon peppermint extract into the batter, then garnish the finished dessert with crushed candy canes. If you’d like a bit of texture, sprinkle 1/2 to 3/4 cup chocolate chips, chopped chocolate, or toasted nuts over the batter in the slow cooker before cooking; they’ll melt into the sauce and add richness. You can also reduce the richness slightly by using 2% milk instead of whole; avoid fat-free milk, as it won’t give the same velvety sauce. To make individual servings, divide the batter among greased, heat-safe ramekins that fit in your slow cooker, add a little water to the bottom of the slow cooker, and cook on HIGH until set, checking earlier since smaller portions cook faster. For food safety, always use instant (not cook-and-serve) pudding mix as specified, and cook on HIGH until the cake is fully set at the edges and steaming hot in the center; the internal temperature of the cake portion should reach at least 160°F if you’re unsure. Do not leave the slow cooker on WARM for more than about 2 hours after cooking, and refrigerate leftovers within 2 hours of serving. Reheat portions gently in the microwave until hot throughout, adding a splash of milk or cream if the sauce has thickened too much.