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Rhubarb Dump Cake

Rhubarb Dump Cake

This Rhubarb Dump Cake is a simple and delightful dessert combining the tartness of fresh rhubarb with a sweet, crispy buttery cake topping. Perfect for quick and fuss-free baking, it balances refreshing tangy flavors with a golden, crumbly crust that melts in your mouth. Ideal for both novice and experienced bakers, this recipe offers versatility for various dietary needs and makes a comforting, nostalgic treat for any occasion.

Ingredients

Scale

Filling

  • 4 cups fresh rhubarb, chopped into 1-inch pieces
  • 1 1/2 cups granulated sugar
  • 1 teaspoon vanilla extract (optional)

Topping

  • 1 box (15.25 oz) yellow cake mix (standard size)
  • 1/2 cup (1 stick) unsalted butter, melted

Instructions

  1. Prepare the Rhubarb Filling: Wash and chop the rhubarb into 1-inch pieces. Place the pieces in a large mixing bowl, toss with sugar until evenly coated, and add vanilla extract if using for additional flavor warmth.
  2. Spread the Filling Evenly: Pour the sugared rhubarb mixture into an ungreased 9×13-inch baking dish, spreading it out evenly to ensure every bite has a consistent tangy fruit base.
  3. Add the Cake Mix Layer: Sprinkle the dry boxed yellow cake mix evenly over the rhubarb layer without stirring or mixing. This layering forms the signature “dump” style texture.
  4. Drizzle Melted Butter: Slowly melt the butter and drizzle it evenly over the cake mix, covering as much surface as possible to create a crispy, golden crust once baked.
  5. Bake to Perfection: Bake in a preheated oven at 350°F (175°C) for 45 to 50 minutes until the topping is golden brown and bubbly around the edges. Let the cake cool for about 15 minutes before serving to set the layers.

Notes

  • Use fresh rhubarb for the best texture and flavor; frozen rhubarb can be used but should be thawed and drained to avoid sogginess.
  • Do not mix the cake mix into the rhubarb—keep layers separate for the perfect crisp crust.
  • Melt butter slowly and drizzle evenly across the cake mix for a uniform crunchy topping.
  • Use a glass or ceramic baking dish for even cooking and to prevent burning at the edges.
  • Allow the cake to cool before slicing to help the filling thicken and the pieces hold together better.

Nutrition

Keywords: rhubarb dessert, dump cake, easy rhubarb cake, quick dessert, tangy dessert, comfort food, rhubarb recipe