Name: Rhubarb Dump Cake
Prep time: 10 min
Cook time: 60 min
Total time: 70 min
Yield: 12
Ingredients: 4 cups sliced rhubarb; 1 cup granulated sugar; 1 box moist yellow cake mix; 1 cup cold water; 3/4 cup unsalted butter (melted)

Rhubarb dump cake is one of the easiest springtime dessert recipes you can make, using a cake mix and a handful of other SIMPLE ingredients in a few EASY steps! Rhubarb is a delicious fruit for springtime desserts, which means this rhubarb dump cake recipe is perfect for your next springtime Sunday dinner!

What is a dump cake?

A dump cake gets its name from the baking process, which is simply to “dump,” or combine, the ingredients layer by layer into a baking dish, and then bake. Dump cakes are easy to make from scratch, most often because they use a store-bought cake mix which allows you to easily add the ingredients to a baking dish.

Ingredients for Rhubarb Dump Cake

This rhubarb dump cake uses a store-bought cake mix, fresh rhubarb, and just a few other simple ingredients:

4 cups sliced rhubarb
1 cup granulated sugar
1 box moist yellow cake mix
1 cup water
3/4 cup (12 Tbsp.) unsalted butter

How to make Rhubarb Dump Cake

Rhubarb dump cake is one of the easiest desserts you can make, following these easy steps:

Preheat oven to 350°F.
Grease a 9″ by 13″ baking dish. Add the sliced rhubarb to the baking dish and spread to cover the bottom of the dish.
Pour the granulated sugar over the top of the sliced rhubarb.
Next, spread the yellow cake mix over the top of the rhubarb and sugar.
Pour the water over the cake mix. Then, pour the melted butter over the cake mix.
Place in the oven and bake for 45-60 minutes or until the top is browned and a knife comes out clean from the center.

Can you freeze dump cake?

Yes, you can freeze a dump cake after baking. Cover with foil or transfer portions to an air-tight container and freeze for up to 2-3 months. We do not suggest freezing the dump cake ingredients before baking. STORING TIP: Leftover dump cake can also be refrigerated for up to one week. However, the texture will soften.

Enjoy these other easy dessert recipes!

Love this rhubarb dump cake and recipes like it? Try these other dessert favorites:

Want to cook more with rhubarb?

Try these easy rhubarb recipes:

Dump cakes are easy dessert recipes with few ingredients, and rhubarb is perfect for springtime. If you’re looking for an easy dessert for Easter, Mother’s Day, brunch, or for after enjoying Sunday supper, this rhubarb dump cake is a perfect choice. We would love to know what you think of this rhubarb dump cake! Let us know in the comments below!

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