Ah, rhubarb! The vibrant pink stalks that pop up in gardens like a cheerful invitation to spring. Whenever I catch a whiff of that tart freshness, memories of my grandmother’s kitchen flood my mind. It was in that cozy little haven, surrounded by the smell of freshly baked goods and sweet laughter, that I first tasted rhubarb upside down cake. I remember it like it was yesterday – the tangy-sweet ribbons of rhubarb nestled beneath a fluffy layer of cake, each forkful melting in my mouth. This is why I’m so excited to share my recipe for Irresistible Rhubarb Upside Down Cake with you!
This cake is a delightful celebration of spring’s harvest, and it’s perfect for everything from afternoon tea to a show-stopping dessert at your next gathering. Trust me, once you try this cake, you’ll find it hard to resist coming back for seconds (and possibly thirds)! Let’s get baking together, shall we?
Why You’ll Love This Recipe
- Simple ingredients you probably already have in your pantry.
- A delightful mix of tangy and sweet flavors that balances perfectly.
- Impressive enough for entertaining but easy enough for a weeknight treat.
- Moist and buttery, making it the ultimate comfort dessert.
Ingredients
Before we dive into baking, let’s gather our ingredients. Here’s what you’ll need:
- 1 ½ cups of rhubarb stalks, chopped into 1-inch pieces
- 1 cup granulated sugar (divided: ½ cup for the rhubarb mixture and ½ cup for the cake batter)
- ⅓ cup unsalted butter, melted
- 1 cup all-purpose flour
- 1 tsp baking powder
- ½ tsp baking soda
- ⅓ cup buttermilk (or milk with a splash of vinegar if you’re out)
- 1 large egg
- 1 tsp vanilla extract
- Pinch of salt
Don’t hesitate to play around with the ingredients! For instance, if you don’t have buttermilk, a tablespoon of vinegar added to regular milk works wonders. Also, feel free to use fresh or frozen rhubarb – just adjust the baking time a tad if your rhubarb is frozen.
Step-by-Step Instructions
Let’s bring this cake to life! Follow these simple steps and we’ll have a stunning dessert ready in no time.
- Preheat your oven: Preheat to 350°F (175°C). A warm oven is essential for that perfectly baked cake.
- Prepare the rhubarb: In a medium bowl, mix the chopped rhubarb and ½ cup of sugar. Let this sit for about 10 minutes to release its juicy goodness.
- Make the topping: In a 9-inch round cake pan, pour in the melted butter. Sprinkle the rhubarb and its juices evenly over the butter. Set aside.
- Mix the dry ingredients: In a separate bowl, whisk together the flour, baking powder, baking soda, and salt.
- Combine the wet ingredients: In another bowl, whisk together the remaining sugar, buttermilk, egg, and vanilla extract until smooth and creamy.
- Bring it all together: Gradually add the dry ingredients to the wet mixture, stirring just until combined. Don’t overmix – we want a light, fluffy cake!
- Pour and bake: Gently pour the batter over the rhubarb mixture in the cake pan. Smooth the top with a spatula and pop it into your preheated oven.
- Bake to perfection: Bake for 30-35 minutes, or until a toothpick inserted comes out clean. The kitchen will be filled with the heavenly aroma of baking cake, luring everyone in!
- Cool it down: Once baked, let the cake cool in the pan for about 10 minutes before inverting it onto a serving plate. This is the fun part—watch the rhubarb tumble out onto the cake, creating a beautiful presentation!
And voilà! You now have the most irresistible Rhubarb Upside Down Cake to share (or not!).

Pro Tips & Variations
Let’s add a little twist or two to this already fantastic recipe:
- Spice it up: Add a sprinkle of cinnamon or nutmeg to the cake batter for some warm spice notes.
- Fancy toppings: After it cools, drizzle a simple glaze made of powdered sugar and lemon juice over the top for extra sweetness.
- Diet swaps: You can substitute half of the all-purpose flour for almond flour for a nuttier flavor and texture.
- Fruit combo: Think beyond rhubarb! Strawberries, blueberries, or even peaches would make fabulous companions to the tartness of rhubarb.
Get creative and let your taste buds lead the way!
Serving Suggestions
Now for the fun part—serving! The best way to enjoy this cake is warm, straight out of the oven. Typically, I love it paired with a scoop of vanilla ice cream, but a dollop of whipped cream also works wonders. For a more rustic experience, serve it with a nice cup of coffee or a refreshing herbal tea. The sweetness of the cake and the earthiness of the drink—for me, it’s a match made in heaven!
If you’re feeling extra fancy, sprinkle some fresh mint leaves or edible flowers on top for a beautiful touch. Trust me, people will be impressed and you’ll feel like a baking superstar!

Storage Tips
Not that you’ll have any leftover, but just in case! Allow the cake to cool completely before storing. You can keep it in an airtight container in the refrigerator for up to a week. It tastes divine cold, too!
If you want to freeze it, wrap the fully cooled cake tightly in plastic wrap and then foil to lock in moisture. It’ll last for up to 3 months in the freezer. When you’re ready to enjoy it, simply thaw it overnight in the fridge. You can reheat individual slices in the microwave or enjoy it cold for a refreshing treat.
Can I use frozen rhubarb?
Absolutely! Just make sure to thaw it and drain any excess water before using it in the cake. This way, you won’t end up with a soggy bottom!
Can I make this cake gluten-free?
Yes, you can! Simply substitute the all-purpose flour for a 1:1 gluten-free flour blend. It works beautifully, and no one will even notice the difference!
How do I know when the cake is done?
The best test is to insert a toothpick in the center. If it comes out clean or with just a few crumbs, your cake is ready. Keep in mind that every oven is a little different, so check a few minutes early just in case!
What if my rhubarb is super tart?
No worries! If your rhubarb is particularly tart, you can add a bit more sugar to the filling mixture. Taste a piece first before adjusting. Some tartness adds a lovely contrast to the sweet cake!
Can I double this recipe?
Of course! Just make sure to adjust the baking time, as a larger cake will take a bit longer to cook through. Use a larger pan or bake it in two separate pans for a layered cake!
Conclusion
I hope you’re as excited to bake this Irresistible Rhubarb Upside Down Cake as I am to share it with you! After all, food is best enjoyed when shared—and this cake is a sweet way of bringing people together. I can’t wait to hear how yours turns out! Don’t forget to comment and let me know how you enjoyed this delightful dessert or if you tried any fun variations. Happy baking, my friend!





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