This 4-Ingredient Slow Cooker Vintage Blueberry Slump is the kind of easy dessert that feels like a little weeknight magic. A slump is an old-fashioned fruit dessert, similar to a cobbler, where bubbling fruit cooks under a soft topping until everything turns jammy and spoonable. Using fresh blueberries and a slow cooker makes it especially practical for busy days when you want something homemade without hovering over the oven.
Serve this warm in bowls with a scoop of vanilla ice cream, a dollop of whipped cream, or a splash of cold heavy cream if you like a more old-school finish. It also pairs really well with coffee after dinner, and if you're serving it for brunch or a casual summer get-together, a side of crispy bacon or breakfast sausage gives a nice sweet-savory balance.
4-Ingredient Slow Cooker Vintage Blueberry Slump
Servings: 6
Ingredients
4 cups fresh blueberries
1 cup yellow cake mix
1 cup lemon-lime soda
2 tablespoons unsalted butter, melted
Directions
1. Lightly grease the slow cooker insert, then spread the fresh blueberries evenly across the bottom.
2. In a medium bowl, stir the cake mix and lemon-lime soda together just until combined, then drizzle in the melted butter.
3. Spoon the batter over the blueberries as evenly as you can. Do not worry if some berries still peek through.
4. Cover and cook on high for 2 to 2 1/2 hours, or until the topping is set and the blueberries are hot and bubbling around the edges.
5. Turn off the slow cooker and let the slump rest for 10 to 15 minutes before scooping into bowls and serving warm.
Variations & Tips
Add a little citrus: If you have a lemon on hand, stir a bit of fresh zest into the blueberries before adding the topping. It brightens the flavor and makes the whole dessert taste even fresher.
Try a different cake mix: White cake mix works beautifully here if you want a lighter vanilla flavor, and butter cake mix gives the topping a richer taste. This is a great trick when you're using what you already have in the pantry.
Keep the lid closed: Slow cooker desserts do best when the heat stays steady, so avoid lifting the lid during cooking unless you absolutely need to check for doneness near the end.
Make cleanup easier: A light coat of butter or nonstick spray in the insert really helps with sticking, especially where the fruit bubbles up along the sides.
Use it for meal prep dessert: Leftovers can be covered and refrigerated for up to 3 days. Reheat individual portions in the microwave, and add fresh whipped cream just before serving to bring it back to life.