This slow cooker 3-ingredient raspberry dump cake is the kind of bright, fruity spring dessert my grandmother made every Easter. It’s almost embarrassingly simple—just raspberry pie filling, a boxed cake mix, and butter—but the result tastes like you fussed for hours. The slow cooker keeps the berries bubbling and jammy while the cake topping turns into a golden, buttery crumble with pockets of tender cake. It’s a very Midwestern, church-basement style dessert: practical, crowd-pleasing, and perfect when you need something sweet that doesn’t demand much attention while you handle the rest of the holiday meal.
Serve this raspberry dump cake warm, right from the slow cooker, spooned into small bowls. It pairs beautifully with a scoop of vanilla ice cream, a dollop of lightly sweetened whipped cream, or even a spoonful of vanilla yogurt if you want to lean slightly lighter. Because it’s so rich and buttery, I like to round out the table with something fresh and crisp—think a simple green salad and a bright main course like roasted chicken or ham for Easter. Leftovers are lovely chilled the next day, almost like a rustic raspberry cobbler, and can be reheated gently or enjoyed cold with coffee.
Slow Cooker 3-Ingredient Raspberry Dump CakeServings: 8
Ingredients
2 cans (21 ounces each) raspberry pie filling
1 box (15.25 ounces) yellow cake mix
1 cup (2 sticks, 226 g) unsalted butter, melted
Directions
Prepare the slow cooker: Lightly coat the inside of a 5- to 6-quart slow cooker with nonstick cooking spray or a thin layer of butter. This helps the dessert release easily and keeps the edges from sticking as the butter bubbles.
Add the raspberry layer: Pour the raspberry pie filling into the bottom of the slow cooker. Use a spatula or the back of a spoon to spread it into an even layer so the berries and juices cover the entire surface. You want a continuous, bright red base so every scoop gets plenty of fruit.
Add the dry cake mix: Sprinkle the dry yellow cake mix evenly over the raspberry pie filling. Do not stir. Aim for a fairly even blanket of cake mix, breaking up any large clumps with your fingers as you go. The dry mix will hydrate from the fruit and butter as it cooks, forming that crumbly, cake-like topping.
Pour on the butter: Slowly drizzle the melted butter evenly over the dry cake mix, trying to cover as much of the surface as possible. Focus especially on the edges, where the butter will pool and create those golden, crisp bits. It’s fine if a few small dry patches remain; steam and berry juices will help them hydrate during cooking.
Cook on HIGH: Cover the slow cooker with its lid. Cook on HIGH for 2 to 2 1/2 hours, or until the top is mostly set and golden brown around the edges, with bright ruby juices bubbling up through the topping. The center should look cooked and no longer dusty with dry mix, though it will stay a bit softer and more spoonable than an oven-baked cake.
Optional hold on WARM: If you’re timing this for a holiday meal or gathering, you can switch the slow cooker to WARM for up to 1 hour once it’s done. Keep the lid slightly vented with a folded kitchen towel or a wooden spoon if you want to preserve the crisper top; a fully closed lid will soften the crumble slightly from the steam.
Serve: Spoon the warm raspberry dump cake straight from the slow cooker into bowls. Be sure to dig all the way down so each serving includes both the bubbling raspberry filling and the golden, buttery cake crumble on top. Serve on its own or with ice cream or whipped cream, and enjoy while still warm and fragrant.
Variations & Tips
Because this dessert is built on pantry staples, it’s easy to adapt without losing the spirit of my grandmother’s simple, three-ingredient Easter treat. For a slightly tangier flavor, you can use a lemon cake mix instead of yellow; the citrus brightens the raspberries and gives a more pronounced springtime character. If you prefer a slightly less sweet dessert, choose a white cake mix and add a pinch of salt over the top before drizzling the butter—this won’t change the ingredient count but will balance the sweetness. You can also play with texture by shortening the cook time slightly (closer to 2 hours) for a softer, more pudding-like center, or extending it by 15–20 minutes for extra browning and crisp edges. For serving variations, try topping with lemon zest, fresh raspberries, or a spoonful of Greek yogurt instead of ice cream. Leftovers can be cooled, stored in the refrigerator for up to 3 days, and reheated gently in the slow cooker on LOW or in the microwave; the flavors often deepen by the next day, making it a convenient make-ahead dessert for busy holiday weekends.
