Easy 3-Ingredient Rhubarb Dump Cake Recipe Perfect for Quick Desserts
A quick and simple rhubarb dump cake made with just three ingredients: fresh rhubarb, boxed yellow cake mix, and melted butter. Perfect for busy weeknights or when you want a comforting homemade dessert with minimal effort.
- Prep Time: 10 minutes
- Cook Time: 40-45 minutes
- Total Time: 50-55 minutes
- Yield: 8 servings 1x
- Category: Dessert
- Cuisine: American
Ingredients
Scale
- 4 cups fresh rhubarb, chopped into 1/2-inch pieces (or thawed and drained frozen rhubarb)
- 1 (15.25-ounce) box yellow cake mix (e.g., Duncan Hines Classic Yellow)
- 1 cup (2 sticks) unsalted butter, melted
Instructions
- Preheat your oven to 350°F (175°C).
- Wash and chop about 4 cups of fresh rhubarb into 1/2-inch pieces. If using frozen rhubarb, thaw and drain well.
- Spread the rhubarb evenly across the bottom of a greased 9×13-inch baking dish.
- Sprinkle the dry cake mix evenly over the rhubarb layer.
- Pour the melted butter evenly over the cake mix, using a spoon or spatula to spread gently if needed.
- Bake uncovered in the preheated oven for 40 to 45 minutes. Check around 35 minutes for a golden top and bubbling edges.
- Cool slightly for about 10 minutes before serving to let the juices thicken.
Notes
Do not stir the layers to maintain texture contrast. Melt butter gently to avoid cooking the cake mix prematurely. If edges brown too fast, tent with foil for the last 10 minutes. Let the cake rest before serving to thicken juices. Optional toppings include granulated sugar, cinnamon, or chopped nuts mixed into the butter.
Nutrition
- Serving Size: 1 slice (1/8 of the
- Calories: 275
- Sugar: 22
- Sodium: 210
- Fat: 12
- Saturated Fat: 7
- Carbohydrates: 38
- Fiber: 2
- Protein: 2
Keywords: rhubarb dump cake, easy dessert, 3-ingredient cake, quick rhubarb dessert, simple dump cake, rhubarb recipe, yellow cake mix dessert