Rhubarb Upside-Down Cake | Easy Dessert
- felichiccuisine
- Apr 30
- 6 min read
Tangy. Sweet. Effortless Elegance.
A delicate balance of tart and sweet. Enjoy a tangy-sweet Rhubarb Upside-Down Cake, a simple spring dessert featuring tender poached rhubarb atop a moist, buttery sour cream sponge. Perfect for seasonal gatherings.
How a bundle of fresh rhubarb inspired this tangy-sweet dessert - and why it’s easier than you think!
There’s something about a surprise gift of garden rhubarb that makes it feel like spring has finally arrived. Mine was mostly green-stalked and humble, but after a gentle poach with sugar and lemon, it completely transformed.
It became this beautifully bright, caramelized layer on top of a simple butter cake. It made the kitchen smell amazing. It’s funny how a skeptical start can turn into the perfect seasonal dessert.
Why You’ll Fall for This Cake
Beginner-friendly: No fancy tools required; just a springform pan and basic ingredients.
The Texture: Thanks to the sour cream in the batter, the crumb is exceptionally moist and tender, providing the perfect cushion for the fruit.
Effortless Elegance: Because it’s an upside-down cake, the "decoration" happens naturally in the pan. No fancy frosting skills required!
Step-by-step photos: Foolproof guidance for first-time bakers.
Is rhubarb a fruit or vegetable?
Technically a vegetable, but often treated as a fruit in desserts, its unique tartness makes it a standout addition to sweet dishes. It’s a wonderful contrast to sugar and butter, creating a flavor profile that is both tangy and sweet.
Trim leaves: They’re toxic; discard them!
Chop stalks: Cut into 1-inch pieces for even cooking.
Sweeten wisely: Rhubarb needs sugar; but not too much!
Looking for something similar? You might enjoy: Rhubarb and Strawberry Cake with Lemon Drizzle
A Note on Rhubarb: Pink vs. Green
If you are looking at your grocery store or garden stalks and wondering if they are "ready," don't let the color fool you. There are generally two types of rhubarb you’ll encounter:
Forced Rhubarb (Bright Pink): Usually grown in the dark, these stalks are tender, sweet, and famously pink.
Field-Grown Rhubarb (Green/Red Mix): These stalks are often thicker and can be quite green.
Does the green taste different?
Actually, color isn't a reliable indicator of ripeness or sweetness. Green-stalked rhubarb is just as delicious! While it might stay a bit more "tart" than the forced pink variety, it still softens beautifully when poached. In this cake, the green stalks turn a lovely amber-gold that looks stunning against the pale cake.
Pro Tips for the Perfect Bake
Don't Rush the Poach: Poaching the rhubarb first ensures it is perfectly tender by the time the cake is done. If you skip this, the rhubarb might still be a bit fibrous.
The Lemon Zest Secret: The zest in the batter ties the whole thing together. It bridges the gap between the sweet cake and the acidic rhubarb.
The Flip: Wait about 10–15 minutes after taking the cake out of the oven before flipping it onto your serving plate. This gives the caramel a moment to thicken so it doesn't just run off the sides.
How to Prepare Rhubarb Upside-Down Cake
1. Prepare the Pan
Preheat your oven to 180°C (350°F) or 160°C (325°F) for a fan oven. Line the bottom of a 9-inch (23cm) springform pan with parchment paper. Butter the paper and sides of the pan, then sprinkle 2 tablespoons of brown sugar evenly over the bottom. Set aside.
2. Poach the Rhubarb
✔ Wash and trim the rhubarb, cutting it into 1-inch pieces.
✔ In a saucepan, combine rhubarb, caster sugar, water, and lemon juice.
✔ Bring to a boil, then reduce the heat and simmer gently for about 5 minutes, stirring occasionally until the rhubarb is slightly tender but still holds its shape.
✔ Remove from heat and strain.
✔ Arrange the rhubarb evenly in the prepared cake pan.
✔ Sprinkle with the remaining 2 tablespoons of brown sugar and the lemon zest. Set aside.
3. Make the Cake Batter
✔ In a bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.
✔ In a separate large mixing bowl, beat the butter and granulated sugar together until pale and fluffy.
✔ Mix in the sour cream until smooth.
✔ Add the eggs one at a time, beating well after each addition. Scrape down the sides of the bowl as needed.
✔ Gradually add the flour mixture to the wet ingredients, mixing just until combined.
✔ Do not overmix.
4. Assemble & Bake
✔ Carefully pour the cake batter over the rhubarb layer, spreading it evenly with a spatula to cover the fruit.
✔ Bake for 40–45 minutes, or until a toothpick inserted into the center comes out clean.
Cool & Invert
✔ Let the cake cool in the pan for about 10 minutes.
✔ Run a knife around the edges to loosen the cake, then place a serving plate upside down on top of the pan.
✔ Carefully invert the cake onto the plate, removing the parchment paper if needed.
Frequently Asked Questions
Question | Answer |
Can I use frozen rhubarb? | Yes! Just let it thaw completely and drain any excess liquid before poaching, otherwise, the topping may become too watery. |
Is sour cream necessary? | It’s highly recommended. The fat and acidity in sour cream create a "delicate" crumb that won't dry out. Full-fat Greek yogurt is a great 1:1 substitute. |
How do I store this cake? | This cake is best served fresh, but you can keep it in an airtight container at room temperature for up to 2 days. The rhubarb topping stays moist, so no need for a paper towel here! |
Can I skip the poaching step? | You can, but your rhubarb will have a much firmer "bite." Poaching creates that classic, soft upside-down cake texture that melts in your mouth. |
Can I make this gluten-free or vegan? | Gluten-free: Swap all-purpose flour with a 1:1 gluten-free blend (like Doves Farm). Vegan: Replace butter with coconut oil, eggs with flax eggs, and sour cream with coconut yogurt. |
Can I add strawberries or other fruits? | Absolutely! Try a rhubarb-strawberry combo (use 1 cup each) or check out the Rhubarb & Strawberry Cake for further inspiration. |
Love this recipe? Please leave a comment and star rating ★★★★★ Your feedback, suggestions, and adaptations are very helpful to other bakers
Rhubarb Upside-Down Cake | Easy Dessert
Recipe
Enjoy a tangy-sweet Rhubarb Upside-Down Cake, a simple spring dessert featuring tender poached rhubarb atop a moist, buttery sour cream sponge. Perfect for seasonal gatherings
Serving: 24
Calories: 285 kcal
Prep Time: 15 min
Baking Time: 12 min
Cooling Time: 15 min
Total Time: 45 min
Ingredients
For the Poached Rhubarb:
5-6 stalks fresh rhubarb chopped
100g caster sugar
400ml water
2 tbsp lemon juice
For the Cake Batter:
160g all-purpose flour
¾ tsp baking powder
¼ tsp baking soda
Pinch of salt
150g granulated sugar
115g unsalted butter room temperature
2 large eggs
120g sour cream
4 tbsp brown sugar
Zest of 1 lemon
Serve (Optional):
Sweetened whipped cream
Method
Prepare the Pan: Preheat oven to 180°C (350°F) or 160°C (325°F) for fan oven. Line a 9-inch (23cm) springform pan with parchment. Butter the paper and sides, then sprinkle 2 tbsp brown sugar evenly over the bottom.
Poach the Rhubarb: Wash and trim rhubarb, cutting into 1-inch pieces. In a saucepan, combine rhubarb, caster sugar, water, and lemon juice. Bring to boil, then simmer gently for 5 minutes until slightly tender but still holding shape. Strain and arrange in prepared pan. Sprinkle with remaining brown sugar and lemon zest.
Make the Batter: Whisk together flour, baking powder, baking soda, and salt. In another bowl, beat butter and granulated sugar until pale and fluffy. Mix in sour cream, then eggs one at a time. Gradually add flour mixture, mixing just until combined.
Assemble & Bake: Pour batter over rhubarb, spreading evenly. Bake 40-45 minutes until toothpick comes out clean.
Cool & Invert: Let cool in pan for 10 minutes. Run knife around edges, then invert onto serving plate. Remove parchment and let cool completely before slicing. Serve with whipped cream if desired.
Enjoy!
N0tes
1. For extra caramelization, sprinkle an additional 1 tbsp brown sugar over rhubarb before adding batter.
2. Store covered at room temp for 2 days or refrigerate for up to 5 days.
3. Can substitute strawberries for half the rhubarb for a classic combination.
A Thought Among Flavours“People don’t notice whether it is winter or summer when they are happy.” — Anton Cehov |
Love this recipe? Please leave a comment and star rating. ★★★★★ Your feedback, suggestions, and adaptations are very helpful to other bakers!
Have you tried making this Rhubarb Upside-Down Cake? I'd love to hear about your experience! Share your thoughts and any creative twists you added to the recipe in the comments below. Or, tag me on Instagram (@FeliChic'Cuisine) when you post your recipe creations. Let's inspire each other. Thank You!
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