Our old fashioned Rhubarb Dump cake recipe is an easy one dish dessert that's tangy and sweet in each bite. This easy-to-make dessert is perfect for showcasing the tartness of fresh rhubarb. With only five ingredients, this rustic delight could be on your table tonight!
Preheat the oven to 350℉, and spray a 9 x 13 casserole dish with non stick cooking spray.
Wash and trim the ends off the fresh rhubarb. Cut into 1" pieces and spread in the bottom of the casserole dish.
1 lb rhubarb
Sprinkle the Strawberry Jello over the cut rhubarb first, then sprinkle the sugar over the Jello.
1 pkg strawberry gelatin dessert, ¾ cup sugar
Sprinkle the dry cake mix over the sugar and Jello covered rhubarb, making sure to evenly distribute it.
1 pkg White cake mix
Drizzle the melted butter over the cake mix topped fruit mixture, then carefully pour the water over the everything.
½ cup butter, 2 cup water
Bake for 45 to 60 minutes, or until the top is golden brown and bubbly.
Remove from the oven and let cool for about 20 minutes before serving. Serve alone or with ice cream or whipped cream.
Notes
Don't Stir! The "dump" in dump cake is key! Resist the urge to stir the ingredients once they are in the pan. The butter melting through the dry cake mix is what creates the delicious cake-like topping.
Slice Butter Thinly: For the best results, slice your cold butter into thin pats or small cubes. This allows it to melt more evenly over the dry cake mix and moisten it thoroughly.
Check for Doneness: While the edges might be bubbly, check the center. The top should be golden brown and the fruit mixture underneath should be bubbling thickly.
Cool Before Serving: While tempting to dig in hot, allowing the dump cake to cool for at least 20-30 minutes helps the fruit filling set up, making it easier to serve and enjoy.