Strawberry-Rhubarb Dump Cake Recipe

Rhubarb Strawberry Dump Cake

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Prep: 10 mins
Cook: 60 mins
Total: 70 mins
Servings: 4 to 6 servings
Yield: 1 cake
Nutrition Facts (per serving)
660 Calories
19g Fat
109g Carbs
16g Protein
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Nutrition Facts
Servings: 4 to 6
Amount per serving
Calories 660
% Daily Value*
Total Fat 19g 24%
Saturated Fat 11g 56%
Cholesterol 41mg 14%
Sodium 792mg 34%
Total Carbohydrate 109g 40%
Dietary Fiber 3g 10%
Total Sugars 72g
Protein 16g
Vitamin C 8mg 41%
Calcium 286mg 22%
Iron 2mg 12%
Potassium 341mg 7%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

This super easy rhubarb dump cake is made with layers of ingredients, including fresh diced rhubarb, strawberry-flavored gelatin, and a cake mix. It's a great way to use that spring and summer rhubarb.

Feel free to replace a cup or two of the rhubarb with sliced fresh strawberries or whole frozen strawberries. Top the warm cake with ice cream or sweetened whipped cream.


  • 5 cups cubed fresh rhubarb, cut in 1- to 1 1/2-inch pieces

  • 1 cup granulated sugar

  • 1 (3-ounce) package strawberry-flavored gelatin, sugar-free works fine

  • 1 (18.5-ounce) package white cake mix, 2-layer size

  • 1 1/4 cups water

  • 1/2 cup unsalted butter or margarine, melted

Steps to Make It

  1. Gather the ingredients.

  2. Butter a 9-by-13-by-2-inch baking dish. Heat the oven to 350 F.

  3. Put the cubed rhubarb in the baking dish.

  4. Top with the granulated sugar, then sprinkle the gelatin over the sugar. 

  5. Sprinkle the dry cake mix over the gelatin layer, then pour the water over the cake mix layer.

  6. Drizzle the melted butter over all. Do not stir or mix the ingredients.

  7. Bake in the preheated oven for about 50 to 60 minutes. 

  8. Serve the cake warm with sweetened whipped cream, ice cream, or frozen (thawed) whipped topping.

  9. Enjoy!

    Recipe Variations

    • Replace the white cake mix with a yellow or butter cake mix.
    • Add 1 cup of sliced fresh strawberries along with 4 cups of rhubarb.