Strawberry-Rhubarb Dump Cake

This Strawberry-Rhubarb Dump Cake is not only super easy to make, it’s the perfect combination of sweet and tart and is reminiscent of desserts your great-grandmother made!

Dump cakes are a dessert dating back to the early 1900’s. All the ingredients are ”dumped” and mixed together right in the baking pan making clean up a cinch!

And, they are very flexible and forgiving. I’ve made them with fresh peaches, mixed wild foraged berries, canned fruit cocktail, and home-canned apple and cherry pie fillings.

Sad, Sad Rhubarb Plants

We’ve had these plants for quite a few years. I think I had them when I was living in the Willamette Valley of Oregon and they followed me when I moved to Central Washington to be with Mr. Misty.

While there, we lived in a rental for a couple of years until we found our homestead in western Washington. During that time, the rhubarb plants never made it out of their containers, which were pretty large, but obviously not large enough as one plant remained stunted and the other wanted to bolt, and neither of them produced a harvestable stalk!!

And… I hate to share this, but once we moved here, they spent another 2 years in those same containers.

Late last spring, Mr. Misty began making raised beds to make gardening a bit easier for me and he made beds just for the rhubarb. Have I mentions what an amazing man he is? I am blessed beyond measure.

Once the raised bed was completed, we attempted something that made (and still does) my heart beat faster with anxiety – we split the roots: the stunted one into two plants and the bolter into THREE!!

The “bolter” split into three.

Once we put them to bed, they looked absolutely pathetic and I was sure they wouldn’t make it thought the summer… but they did… and then they make it though the winter!!

After transplanting the splits.

In fact, almost a year later, they are now flourishing and produced enough from this weekends harvest to make dessert for Mr. Misty to take with him to Men’s Prayer Night.

Strawberry-Rhubarb Dump Cake

This first harvest came at just the right time. Mr. Misty’s mom used to make a similar dessert and the 5th anniversary of her passing was the weekend we harvested.

You may notice the recipe says “Strawberry Gelatin” and my photos show “Raspberry Gelatin”. It’s ok. Both work. In fact, cherry is a delightful change up. I’ve used almost every flavor of gelatin… well, probably not lime, that’s just a bit too reminiscent of recent hospital stays.

Strawberry-Rhubarb Dump Cake

An easy dessert that is the perfect combination of sweet and tart.
Prep Time15 mins
Cook Time45 mins
Total Time1 hr
Servings: 16


  • 3 Cups Strawberries, Sliced
  • 3 Cups Rhubarb, Sliced (1 inch slices)
  • 1/2 Cup Sugar
  • 1/4 Cup Honey
  • 1 Pkg (3.2oz) Strawberry Gelatin Powder
  • 1 White Cake Mix
  • 1/2 Cup Water
  • 1/2 Cup Butter, sliced into 12 pieces


  • Pre-Heat oven to 350ºF
  • Slice Strawberries and Rhubard and place into a greased 9×13 baking dish and press down.
  • Sprinkle with gelatin powder and sugar and drizzle honey and water over the top of that.
  • Pour dry cake mix over the top.
  • Top with butter slices
  • Bake at 350ºF for 35-45 minutes or until golden brown. 

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When Mr. Misty brought the empty pan back after the prayer meeting, I asked him, like I always do, “how many men were there?” Three. Three men devoured this Strawberry-Rhubarb Dump Cake – that’s how delicious it is!

If you make this, we’d love to hear what you think!!

What do you make with your rhubarb? We’d love for you to tell us in the comments.

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