Make this incredible rhubarb upside-down cake for a delicious dessert that deceptively simple to make! Everyone will love it, especially when you serve it with some frosty ice cream or a heavenly dollop of whipped topping!

Getting a head-start with cake mix makes this Rhubarb Upside-Down Cake recipe a breeze to throw together!

Rhubarb Upside-Down Cake Recipe

Ingredients you will need:

  • 1 cup sugar
  • Eggs, oil, and water as directed on cake mix
  • 6 tablespoons butter, melted
  • Whipped cream or vanilla ice cream, optional
  • Red food coloring
  • 4 cups finely diced rhubarb
  • 1 (18.5 ounce) package white cake mix

Preheat oven to 375 degrees. Finely dice 4 cups rhubarb. Place in mixing bowl or dish.

Kristy slices rhubarb.

Add 1 cup sugar.

Kristy adds sugar to rhubarb.

Add 6 tablespoons melted butter.

Kristy adds melted butter to rhubarb.

Add several drops red food coloring.

Kristy adds red food coloring to rhubarb.


Kristy stirs rhubarb and ingredients.

Place rhubarb mixture into 9″ x 13″ pan. Spread rhubarb mixture equally. Grease the pan if it is metal, though if you use the Rada Rectangular Baker, grease isn’t necessary.

Kristy adds rhubarb to baking pan.

Add 1 package prepared white cake mix to top of rhubarb mixture. Place in oven. Bake for 35 minutes.

Kristy adds white cake mix to rhubarb mixture.

Remove pan from heat. Loosen edges and carefully invert onto a large platter. Serve your Rhubarb Upside Down Cake warm or cold, topped with vanilla ice cream or whipped topping. Enjoy!

Kristy with completed Rhubarb Upside-Down Cake.

Bake the Stoneware Way!

Rada Stoneware Rectangular Baker

The Rada Rectangular Baker is a stoneware pan that will make you never want to bake with metal again! This 9″ x 13″ pan requires no pre-seasoning, and is capable of going directly from the freezer to a 400 degree oven without cracking. The proprietary clay construction ensures that the dish absorbs heat to maintain an even baking temperature, while a three-year warranty protects against defects under normal use, so you can buy and use with confidence. Like all Rada products, it’s made entirely in the USA!

Visit our online Rada Kitchen Store to bring the Rada Rectangular Baker to your home!

Chop, Cut, and Dice the Rada Way!

Rada Serrated Paring Knife

The Rada Serrated Regular Paring Knife is your ticket to easily preparing fruits, vegetables, and tough, fibrous foods of all kinds! A variation of our best-selling Regular Paring, the Serrated Regular Paring features super-fine serrations that makes cutting even tougher foods as effortless as putting a knife through butter. It comes with a Lifetime Guarantee, and is made in the USA!

The Serrated Regular Paring Knife can be purchased at our online Rada Kitchen Store!

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Rada Cutlery has been the fundraising partner of choice for tens of thousands of groups since 1948. Whatever your good cause, a Rada fundraiser allows you and your group to offer our superior products to supporters, making a superlative 40% profit on each and every sale. Schools, churches, civic organizations, sports teams, charities, and more meet and exceed their financial goals every day by partnering with Rada Cutlery.

Check out our website for information on how to get your successful Rada fundraiser started!

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What is Rhubarb?

Beautiful rhubarb ready to be cooked.

Although a popular ingredient in many desserts, rhubarb isn’t as widely known as other common dessert ingredients such as apples or cherries. But that doesn’t mean it’s not just as delicious!

Rhubarb is a thick plant physically similar to celery. Although usually considered a vegetable, rhubarb is most often used as a fruit due to its tart flavor.

Visit for hundreds of delicious dishes utilizing rhubarb!

Rhubarb Upside-Down Cake Video Recipe

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Rhubarb Upside Down Cake Collage

Rhubarb Upside-Down Cake Video Transcript

Hi, Kristy in the Rada kitchen. It’s rhubarb season, so I want to share a recipe for a Rhubarb Upside-Down Cake. It’s in our rhubarb cookbook, there’s 101 recipes for rhubarb in here.

Now, to cut a fibrous, woody vegetable like this, I like to use the Rada Serrated Paring Knife. It has a super-fine serration, but it works really good to slice through something that’s fibrous. It’s great for asparagus, too, so it’s kind of my springtime knife. You want to finely dice this. If you’re looking for a fundraiser for a club or church or youth group these Rada knives are available as a fundraising option. This knife sells for less than $5, so it’s affordable, and people get something they can actually use. We have customers tell us that they’ve been using the same knife for over 40 years and are still using them. So they’re economically priced and useful. Everybody can use a good, useful tool in the kitchen.

Now to our finely diced rhubarb we’re going to add a cup of sugar, 6 tablespoons of melted butter, and, if you want, a couple drops red food coloring. Because rhubarb turns brown when it gets cooked the food coloring will give it that nice, red look.

Now we’re going to spread our rhubarb mixture into a greased, 9 x 13” pan. This is the Rada Stoneware Rectangular Baker. It’s all I use. It has even heating, it keeps the food hot longer after you take it out of the oven, you don’t burn stuff in it. Now, on top of this, I’ve already mixed up a white cake mix the way the directions said. We’re just going to pour this evenly over that rhubarb mixture. You’re going to want to make sure you have your oven preheated to 375 degrees. We’re going to place this in our preheated oven.

So, our rhubarb upside-down cake just got out of the oven. After about 3 minutes I flipped it onto a serving platter. You can serve it warm. It’s really pretty and it’s good to serve with some ice cream or whipped topping. And that’s one of the 101 Recipes with Rhubarb cookbook recipes.

End of Video Transcript