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There’s a special kind of magic when a cake is flipped, revealing its beautiful, golden top. This rhubarb upside down cake recipe isn’t just about the sweet, tangy fruit; it’s about bringing people together and creating memories that last. As the cake bakes, your kitchen fills with the irresistible aroma of butter, sugar, and rhubarb. The anticipation grows, and when you flip it over, you’re greeted with a stunning, caramelized masterpiece.
This dessert is a blend of tradition and modern simplicity, perfect for any occasion. Whether it’s your first time baking or you’re a seasoned pro, this easy-to-follow recipe will guide you to create a deliciously moist and flavorful cake that will have everyone asking for seconds. Let’s make this moment unforgettable, one slice at a time.
Introduction
There’s something truly magical about a rhubarb upside down cake. The combination of tart rhubarb and a sweet, buttery cake creates a delightful contrast that will have you coming back for more. Whether you’re baking for a special occasion or simply indulging in a homemade treat, this rhubarb upside down cake recipe is a crowd-pleaser that never disappoints. The vibrant pink rhubarb layer on top caramelizes beautifully, offering a rich, tangy flavor that’s perfectly balanced by the soft, moist cake beneath. It’s a simple yet irresistible dessert that’s sure to brighten any gathering. Let’s dive into the recipe and get you baking.
Ingredients

To bring this rhubarb upside down cake recipe to life, you’ll need the following simple, fresh ingredients that come together perfectly to create a dessert everyone will love. Don’t worry; it’s easy to find these in most local stores.
For the Topping:
- 1 ½ cups rhubarb (fresh, cut into 1-inch pieces): The star of the cake! Its tartness balances out the sweetness of the cake beautifully.
- ¾ cup brown sugar: This creates the caramelized topping that adds sweetness and a lovely texture.
- 3 tbsp unsalted butter: For richness and a smooth finish.
For the Cake:
- 1 ¾ cups all-purpose flour: A classic base for a moist cake.
- 1 tsp baking powder: This helps the cake rise and stay light and fluffy.
- ¼ tsp baking soda: Works alongside baking powder for the perfect texture.
- ¼ tsp salt: A pinch of salt enhances all the flavors.
- ¾ cup granulated sugar: Adds a light sweetness to the cake batter.
- 2 large eggs: Essential for structure and moisture.
- ½ cup buttermilk: Adds tenderness and a slight tang to balance the sweetness.
- ¼ cup vegetable oil: Keeps the cake moist without being too heavy.
- 1 tsp vanilla extract: A splash of vanilla brings all the flavors together.
With these ingredients, you’re all set to create a deliciously moist and fruity rhubarb upside down cake that’s sure to impress. It’s an easy-to-follow recipe that turns out perfectly every time.
Instructions

Follow these steps to create your perfect rhubarb upside down cake recipe. Each step is designed to be simple and clear, just as if I were guiding a friend through the process.
Prepare Your Pan and Rhubarb Layer:
Preheat your oven to 350°F (175°C).
Coat a 9-inch round cake pan thoroughly with butter or a light layer of cooking spray to prevent sticking.
Evenly spread 2 cups of chopped fresh rhubarb across the bottom of the pan.
Sprinkle 1 cup of brown sugar over the rhubarb and drizzle 2 tablespoons of melted butter on top. This layer will form a deliciously caramelized topping when flipped.
Mix the Cake Batter:
In a separate bowl, combine 1½ cups of all-purpose flour, 1 teaspoon of baking powder, and a small pinch of salt, whisking them together.
In another bowl, beat ½ cup of softened butter with 1 cup of granulated sugar until the mixture is light and fluffy.
Crack in two large eggs, incorporating them one at a time and mixing thoroughly after each. Then, blend in a teaspoon of vanilla extract.
Gradually fold the dry ingredients into the butter mixture, alternating with ½ cup of milk. Stir until just combined, be careful not to overmix, as you want a light and tender cake.
Assemble and Bake:
Pour the batter gently over the rhubarb layer in the pan, using a spatula to spread it evenly. Don’t worry if a few pieces of rhubarb peek through; that’s part of the charm.
Place the pan in the oven and bake for 40-45 minutes, or until a toothpick inserted into the center comes out clean. The cake should have a beautiful, golden-brown crust.
Cool and Invert:
Take the cake out of the oven and allow it to rest in the pan for approximately 10 minutes before handling.
Run a knife around the edges, then place a serving plate over the pan and carefully flip it to reveal the stunning, caramelized rhubarb topping.
Enjoy your creation warm, perhaps with a side of whipped cream or a scoop of ice cream. This rhubarb upside down cake recipe is sure to be a delightful treat for any occasion.
Tips and Tricks
Choose the Right Rhubarb
For the best flavor, go for fresh rhubarb stalks that are firm and brightly colored. If your rhubarb is on the tart side, you can sprinkle a little extra sugar on top before baking.
Prepare Your Pan Properly
A well-greased pan ensures the cake releases smoothly. Use butter or non-stick spray, making sure to coat the sides evenly. Lining the bottom with parchment paper can also help prevent sticking.
Evenly Distribute the Topping
When arranging the rhubarb and sugar mixture, spread everything out evenly. This helps the caramel layer coat the cake perfectly once flipped.
Room Temperature Ingredients
Let your butter, eggs, and milk sit at room temperature before mixing. This helps the batter blend smoothly and bake evenly.
Check for Doneness
Since oven temperatures can differ, begin checking for doneness after about 40 minutes. Insert a toothpick into the center, if it comes out clean or with only a few soft crumbs, the cake is ready.
Cooling Matters
Let the cake rest for about 10 minutes before inverting it onto a plate. If it sticks, gently tap the pan or run a knife along the edges to loosen it.
By following these simple steps, you’ll get a deliciously moist and flavorful rhubarb upside down cake every time.
Conclusion
Once your rhubarb upside-down cake is baked and slightly cooled, it’s time to enjoy the perfect balance of sweet and tart flavors. The caramelized topping and tender cake make it a wonderful treat for any occasion. Enjoy it warm alongside a scoop of ice cream or a spoonful of whipped cream for a delightful finishing touch.
This recipe is a great way to highlight rhubarb’s unique flavor while keeping the process simple and enjoyable. Whether you’re making it for a gathering or just as a cozy homemade dessert, it’s sure to impress. Give it a try, and don’t forget to share your results, you might just find a new favorite to add to your baking list.
FAQs
What is the point of an upside-down cake?
An upside-down cake creates a beautifully caramelized fruit topping without the need for extra decoration. The fruit is placed at the bottom of the pan, covered with cake batter, and baked. Once flipped, the fruit glistens on top, making for a stunning and flavorful dessert.
How much baking soda do I put in rhubarb?
If your rhubarb is especially tart, you can add ¼ to ½ teaspoon of baking soda per cup of rhubarb to slightly reduce the acidity. This helps balance the flavors without altering the texture of your cake.
What does rhubarb taste like in a cake?
Rhubarb has a naturally tart and slightly tangy flavor, which contrasts beautifully with the sweetness of the cake. When baked, it softens and releases its juices, adding a deliciously rich and fruity taste to every bite.
What pan is best for upside-down cake?
A 9-inch round cake pan or a well-seasoned cast-iron skillet works best. Both ensure even heat distribution, helping the fruit caramelize perfectly. If using a cake pan, make sure it has deep sides to hold the fruit and caramel without overflowing.
What fruit is good for upside-down cake?
Besides rhubarb, some other great options include:
Pineapple: The classic choice with a sweet, tropical flavor
Peaches: Soft and juicy, perfect for a summer version
Apples: Great for a fall-inspired twist
Berries: Strawberries, raspberries, or blueberries add a vibrant, tart touch
Pears: Create a delicately sweet, elegant cake
What is another name for upside-down cake?
This type of cake is sometimes called a flip cake or tarte renversée (the French version). However, the most famous variation remains the pineapple upside-down cake.
Should rhubarb be cooked before baking?
No, there’s no need to cook rhubarb beforehand. It softens naturally as the cake bakes, releasing its juices and blending beautifully with the caramelized topping.
Can you put raw rhubarb in a cake?
Yes! Rhubarb can be added directly to the cake batter or placed at the bottom of the pan for an upside-down cake. If your rhubarb is very tart, tossing it with a little sugar beforehand can help balance the flavor.
When should you flip an upside-down cake?
Wait about 10 to 15 minutes after baking before flipping your cake. This allows the caramel to set slightly while keeping the fruit from sticking. Run a knife around the edges, place a serving plate over the pan, and flip it in one smooth motion.