Easy Strawberry Rhubarb Dump Cake

This effortless dessert combines tart rhubarb with sweet strawberries, all topped with a buttery cake mix topping. It’s the perfect blend of sweet and tart, with minimal prep time!

Ingredients

For the Filling:

  • 4 cups fresh rhubarb, chopped
  • 4 cups fresh strawberries, sliced
  • 1 cup granulated sugar
  • 2 tablespoons cornstarch
  • 1 teaspoon vanilla extract
  • 1/4 teaspoon salt

For the Topping:

  • 1 box yellow cake mix
  • 1 cup (2 sticks) butter, melted
  • 1/2 cup rolled oats (optional)
  • 1/2 cup chopped pecans (optional)

Instructions

Step 1: Preparation

  1. Preheat oven to 350°F
  2. Grease 9×13 baking dish
  3. Cut rhubarb into 1/2-inch pieces
  4. Slice strawberries into halves

Step 2: Create Filling

  1. Mix in large bowl:
  • Rhubarb
  • Strawberries
  • Sugar
  • Cornstarch
  • Vanilla
  • Salt
  1. Pour into baking dish

Step 3: Add Topping

  1. Sprinkle dry cake mix evenly over fruit
  2. Pour melted butter over cake mix
  3. Add oats and nuts if using
  4. Do not stir!

Step 4: Baking

  1. Bake 45-55 minutes until:
  • Top is golden brown
  • Fruit is bubbling
  • Topping is set
  1. Cool 15-20 minutes

Pro Tips

  1. For Best Results:
  • Use fresh fruit when possible
  • Ensure butter covers all cake mix
  • Don’t mix layers
  • Watch for browning
  1. Make-Ahead Tips:
  • Prep fruit day before
  • Store covered in fridge
  • Assemble just before baking

Storage

  • Room temperature: 2 days
  • Refrigerated: 5 days
  • Reheat to serve warm
  • Freezes well unbaked

Variations

  1. Fruit Options:
  • All rhubarb
  • Add raspberries
  • Mixed berries
  • Frozen fruit (thawed)
  1. Topping Ideas:
  • White cake mix
  • Add cinnamon
  • More nuts
  • Extra oats

Perfect for:

  • Easy desserts
  • Potlucks
  • Family gatherings
  • Summer parties

Remember:

  • Don’t skip cornstarch
  • Cover all dry spots
  • Let cool slightly
  • Serve warm

This simple dump cake is the perfect way to enjoy seasonal rhubarb and strawberries. The contrast between tart fruit and sweet cake creates an irresistible dessert!