Rhubarb Upside Down Cake Recipe
If you’re searching for a show-stopping dessert that brings tangy, vibrant fruit together with buttery cake in every bite, look no further than Rhubarb Upside Down Cake. This treat combines the jewel-toned essence of fresh rhubarb with an impossibly tender crumb, all topped off (or is it bottomed off?) by a glossy, caramelized layer that’s bound to impress. Whether you’re a longtime fan of rhubarb or just discovering its unique charm, this is a bake that will convert any skeptic into a celebrant. Rhubarb Upside Down Cake isn’t just pretty—it’s absolutely delicious and will make you fall in love with spring baking all over again.

Ingredients You’ll Need
You’ll only need a handful of classic baking ingredients to make this recipe, and each one plays a crucial role in the magical lift, flavor, and gorgeous color of the finished cake. From rhubarb’s mouthwatering tartness to a buttery, vanilla-kissed batter, these elements work together to give Rhubarb Upside Down Cake its signature appeal.
- Fresh rhubarb: The star of the show—its tartness shines through and provides that rosy pop of color.
- Granulated sugar: Split in the recipe; half for sweetening the fruit and half for the soft, tender cake.
- Unsalted butter (melted, for pan): Creates that coveted golden caramel layer beneath the rhubarb.
- Light brown sugar: Gives depth and a molasses-y richness to the caramel topping.
- Unsalted butter (softened, for batter): Essential for creaming with sugar, which gives the cake its pillowy texture.
- Eggs: Bind everything together and add richness, making each bite satisfying.
- Vanilla extract: Adds warmth and enhances all the other flavors.
- All-purpose flour: Provides structure while keeping the crumb delicate and moist.
- Baking powder: Gives lift to the cake, ensuring it stays fluffy above the rhubarb layer.
- Salt: Balances sweetness and makes the other flavors pop.
- Whole milk: Moistens the batter and adds a touch of old-fashioned richness.
- Optional (for serving): Whipped cream or vanilla ice cream brings the whole dessert together perfectly.
How to Make Rhubarb Upside Down Cake
Step 1: Prep Your Pan and Rhubarb
Start by preheating your oven to 350°F (175°C). Grab your favorite 9-inch round cake pan—this recipe loves a classic pan, not a springform! Coat it liberally with butter and then line the bottom with parchment paper. Meanwhile, combine your chopped rhubarb and half of the granulated sugar in a bowl, tossing gently so every jewel-like piece is sparkling and ready to bake into that bold top layer.
Step 2: Build the Buttery Base
Pour the melted butter right into your prepared cake pan, swirling it to coat the bottom evenly. Next, sprinkle the brown sugar all over that melted butter. This sticky sweet duo will transform in the oven into a luscious, caramelized layer that hugs every piece of rhubarb and forms the true “upside down” magic when you finally flip the cake.
Step 3: Layer in the Rhubarb
Take the sugared rhubarb and scatter it evenly over the brown sugar layer in your pan. Don’t worry about perfection—just aim for even coverage so that, when inverted, every slice boasts a glorious crown of tart, glistening fruit.
Step 4: Cream and Combine the Batter
In a large mixing bowl, beat together the softened butter and the remaining half-cup of granulated sugar until fluffy and pale. This step helps give the cake its tender, light crumb. Beat in the eggs one at a time, then add your vanilla extract—don’t skimp here; it lifts the whole batter with aroma and sweetness!
Step 5: Dry Meets Wet
In a separate bowl, whisk together the flour, baking powder, and salt. Now, add the dry ingredients to the butter mixture in stages, alternating with splashes of milk. Begin and end with the flour mixture—this little trick keeps the batter perfectly blended without over-mixing, which can make cakes tough. The result will be a thick, spoonable batter just yearning for the oven.
Step 6: Spread and Bake
Gently dollop the cake batter over your rhubarb layer, then use a spatula to coax it out to the edges and smooth the top as best you can. Pop the pan into the oven for 40 to 45 minutes, until the cake is golden and a toothpick comes out clean or with just a few moist crumbs. The aroma that fills your kitchen will be pure temptation!
Step 7: The Flip and Reveal
Once your cake has cooled for about 10 minutes (patience is key here!), run a knife around the edges to loosen. Invert a serving plate over the pan, hold your breath, and flip. Gently peel off the parchment to reveal that glossy, pink-streaked rhubarb top—this is the magical payoff of every upside-down cake. Serve it warm or at room temperature, letting the sweet-tart topping shine.
How to Serve Rhubarb Upside Down Cake

Garnishes
A cake this pretty deserves a little flourish. A big dollop of softly whipped cream or a scoop of vanilla ice cream not only looks gorgeous but contrasts perfectly with the tart rhubarb and buttery base. For a little extra color, scatter fresh mint or even a handful of tiny edible flowers on top—guests will absolutely swoon.
Side Dishes
When serving Rhubarb Upside Down Cake, keep the sides simple and light so your beautiful cake can take center stage. A bowl of fresh berries or a fruit salad works wonderfully, or serve with tea or coffee for an afternoon treat. If you’re feeling indulgent, a splash of homemade custard alongside each slice is pure bliss.
Creative Ways to Present
For a lovely, rustic look, serve the cake straight from the platter with a big serving spoon. Alternatively, cut neat wedges and arrange them on individual plates, topped with a cloud of whipped cream and a sprinkle of lemon zest. If you’re making mini cakes, use ramekins for personal upside-down treats—perfect for a special brunch or picnic, making Rhubarb Upside Down Cake even more memorable.
Make Ahead and Storage
Storing Leftovers
If you have leftovers (which is rare!), cover the cake well with plastic wrap or store in an airtight container at room temperature for up to two days. The rhubarb topping keeps the cake moist, so it won’t dry out quickly. If your kitchen’s particularly warm, you can refrigerate the cake, but be sure to bring slices to room temperature before serving for best flavor.
Freezing
Yes, you can freeze Rhubarb Upside Down Cake! Make sure the cake is completely cool, then wrap it tightly in plastic wrap and a layer of foil to prevent freezer burn. Store for up to two months. Thaw it overnight in the fridge and let it come to room temperature before serving—it’ll still have that same dreamy crumb and tangy top.
Reheating
To enjoy your cake warm, just pop individual slices in the microwave for 10–15 seconds or reheat the whole cake (covered with foil) in a 300°F oven for about 15 minutes. This brings back that fresh-baked fragrance and softens the caramelized rhubarb without drying out the cake underneath.
FAQs
Can I use frozen rhubarb for this recipe?
Absolutely! Just thaw and drain the rhubarb very well before using—excess moisture can make the topping a bit soupy, but otherwise, it works beautifully for Rhubarb Upside Down Cake. You’ll still get that pop of color and all the zingy goodness.
What if I don’t have a round cake pan?
No worries! You can use a square 8-inch pan or an oven-proof skillet, though baking times may shift a little. The important thing is to watch for that golden, springy top and to test with a toothpick for doneness.
How do I keep the cake from sticking when I invert it?
Lining the pan with parchment paper and generous buttering are your best friends. Letting the cake cool for about 10 minutes before flipping also gives the topping time to set, helping you pull off a clean, stunning reveal.
Is it possible to make this cake gluten-free?
Yes! Try substituting a good 1:1 gluten-free flour blend for the all-purpose flour. The texture might be a touch different, but the rhubarb and caramel topping mean every bite still tastes like springtime.
Can I use other fruits in place of rhubarb?
You sure can—try strawberries, peaches, or plums for a different twist, or combine them with rhubarb for a hybrid upside down cake. Each fruit brings its own unique flavor and color to the party, but nothing quite matches the classic tang of Rhubarb Upside Down Cake.
Final Thoughts
Every time I flip a Rhubarb Upside Down Cake and watch that vibrant, shimmering top come into view, I’m reminded why this is such a beloved seasonal treat. If you’ve never tried it before, now’s the perfect time—give it a whirl, share it with friends, and let yourself be swept away by its irresistible sweet-tart charm!
Print
Rhubarb Upside Down Cake Recipe
- Total Time: 1 hour 5 minutes
- Yield: 8 servings 1x
- Diet: Vegetarian
Description
Indulge in the sweet-tart goodness of this Rhubarb Upside Down Cake, where tender rhubarb meets a buttery, caramelized topping over a moist vanilla cake. This delightful dessert is perfect for showcasing the flavors of spring.
Ingredients
Rhubarb Topping:
- 2 cups fresh rhubarb, diced into 1/2-inch pieces
- 1/2 cup granulated sugar
- 1/4 cup unsalted butter, melted
Cake Batter:
- 1/2 cup packed light brown sugar
- 1/2 cup unsalted butter, softened
- 2 large eggs
- 1 teaspoon vanilla extract
- 1 1/2 cups all-purpose flour
- 1 1/2 teaspoons baking powder
- 1/4 teaspoon salt
- 1/2 cup whole milk
Optional: whipped cream or vanilla ice cream for serving
Instructions
- Preheat the oven: Preheat the oven to 350°F (175°C) and prepare a 9-inch round cake pan by greasing it and lining the bottom with parchment paper.
- Prepare the rhubarb topping: Toss the chopped rhubarb with 1/2 cup granulated sugar and set aside. Pour melted butter in the cake pan and sprinkle brown sugar evenly. Spread the sugared rhubarb on top.
- Make the cake batter: Cream softened butter and remaining sugar until fluffy. Beat in eggs one at a time and add vanilla. In a separate bowl, whisk flour, baking powder, and salt. Add dry ingredients to the creamed mixture alternately with milk.
- Bake: Spread batter over rhubarb in the pan and bake for 40–45 minutes until a toothpick comes out clean from the center. Cool for 10 minutes, then invert onto a plate. Serve warm or at room temperature.
Notes
- Fresh rhubarb is recommended, but frozen can be used if thawed and drained properly.
- Pair this cake with whipped cream or vanilla ice cream for a delightful treat.
- Prep Time: 20 minutes
- Cook Time: 45 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 310
- Sugar: 29g
- Sodium: 120mg
- Fat: 14g
- Saturated Fat: 8g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 44g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 65mg