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Easy Rhubarb Dump Cake Recipe with Buttered Cake Mix and Pecans for Perfect Homemade Dessert

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A quick and easy rhubarb dump cake featuring buttered cake mix and crunchy pecans, perfect for a comforting homemade dessert with minimal effort.

Ingredients

Scale
  • 4 cups chopped rhubarb (fresh or frozen, thawed and drained if frozen)
  • 1 ½ cups granulated sugar
  • 1 box (15.25 oz / 432 g) buttered cake mix (e.g., Duncan Hines Butter Golden Cake Mix)
  • 1 cup chopped pecans (toasted if desired)
  • ½ cup (1 stick / 113 g) unsalted butter, melted
  • 1 teaspoon vanilla extract (optional)

Instructions

  1. Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish with butter or non-stick spray.
  2. In a mixing bowl, toss the chopped rhubarb with 1 ½ cups granulated sugar. Stir gently and let sit for 5-10 minutes to macerate.
  3. Pour the sweetened rhubarb mixture evenly into the bottom of the prepared baking dish without pressing down.
  4. Sprinkle the entire box of buttered cake mix evenly over the rhubarb layer without mixing or pressing.
  5. Scatter the chopped pecans evenly over the cake mix.
  6. Drizzle the ½ cup melted unsalted butter slowly and evenly over the entire surface.
  7. If using, sprinkle 1 teaspoon vanilla extract over the top.
  8. Bake in the center rack of the oven for 40-45 minutes until the top is golden brown and bubbling around the edges.
  9. Remove from oven and let cool for 10-15 minutes before serving.

Notes

Let rhubarb macerate with sugar to soften tartness and release juices. Pour melted butter slowly and evenly to ensure a golden crust. Toast pecans for extra flavor. Tent with foil if pecans brown too fast. Use buttered cake mix for richer flavor. Variations include gluten-free, vegan, nut-free, and spiced versions.

Nutrition

Keywords: rhubarb dump cake, easy dessert, buttered cake mix, pecans, quick cake, homemade dessert, seasonal dessert, simple recipe