If you’re searching for a dessert that perfectly balances tangy freshness and buttery sweetness, you absolutely have to try this Rhubarb Upside Down Cake Recipe. It’s a showstopper with a gorgeous ruby red crown of tender rhubarb pieces sitting atop a moist, tender cake that’s bursting with bright citrus notes and a hint of cinnamon. This cake is the kind of recipe that feels both nostalgic and special, making it ideal for family gatherings or any occasion where you want to impress without fuss. Once you taste it, you’ll be smitten with how that caramelized rhubarb contrasts beautifully with the soft crumb, turning a simple cake into an indulgent treat.
Ingredients You’ll Need
These ingredients come together simply, yet each one plays a crucial role in perfecting the flavor, texture, and vibrant color of the Rhubarb Upside Down Cake Recipe. From the tart rhubarb and bright citrus elements to the rich butter and tender sour cream, every component is essential for that irresistible balance.
- Rhubarb (3 cups): Fresh, chopped rhubarb provides the signature tang and beautiful pink hue.
- Granulated sugar (3/4 cup + 1 cup + 2 tbsp + 2 tbsp): Sweetens the rhubarb and the batter, creating caramelized layers and a tender crumb.
- Salted butter (4 tbsp + 1/2 cup softened + 1/4 cup melted): Adds richness and moisture, while helping caramelize the rhubarb topping.
- Large eggs (2): Bind everything together and lend structure to the cake.
- Orange zest and juice (1 tsp zest + 1 tbsp + 1 tsp juice): Introduce a fresh, citrus brightness that complements the rhubarb’s tartness.
- Vanilla extract (1 tsp): Adds warmth and depth to the cake’s flavor.
- Full fat sour cream (1/2 cup): Keeps the cake incredibly moist and tender with a subtle tang.
- All-purpose flour (1 1/2 cups + 2 tbsp + 1/2 cup + 1 tbsp): The base of the cake, providing structure and a soft crumb.
- Baking powder (1 1/2 tsp): Leavens the cake for a light, airy texture.
- Salt (1/4 tsp + pinch): Enhances all flavors and balances sweetness.
- Milk (1/4 cup): Adds moisture and helps create a smooth batter.
- Brown sugar (2 tbsp, packed): Gives a subtle caramel note to the crumb topping.
- Raw turbinado sugar (2 tsp, optional): Adds a beautiful crunch and sparkle atop the crumb.
- Cinnamon (pinch): Warmth in the crumb topping ties flavors together deliciously.
How to Make Rhubarb Upside Down Cake Recipe
Step 1: Prepare the Pan and Rhubarb
Start by preheating your oven to 350℉ (175℃), then generously butter a 9-inch cake pan and line the bottom with parchment paper for easy release. Scatter small chunks of butter over the bottom—this is the first step to that luscious caramel layer. Toss the chopped rhubarb with 3/4 cup of sugar and let it sit; this softens the fruit and helps draw out its juices for the perfect topping.
Step 2: Cream the Butter and Sugar
In a large bowl, beat the softened butter for about a minute until creamy, then add 1 cup plus 2 tablespoons of granulated sugar. Whip it all until the mixture becomes light and fluffy—a simple step that makes the cake delightfully airy.
Step 3: Add the Eggs and Flavorings
Beat in the eggs one at a time, making sure each is fully incorporated before adding the next. Then, stir in the orange zest, juice, and vanilla. These ingredients layer the cake with brightness and depth, elevating it beyond an ordinary dessert.
Step 4: Incorporate the Sour Cream
The sour cream is the secret to a moist and tender crumb. Mix it in gently until the batter feels smooth and luscious.
Step 5: Combine the Dry Ingredients
Slowly add the flour, baking powder, and salt into the batter on low speed. Once combined, pour in the milk and mix just until the batter is uniform. Avoid overmixing to keep the cake light and tender.
Step 6: Assemble the Cake
Spread the sugared rhubarb mixture evenly over the butter chunks in the pan, packing the pieces close to form a beautiful fruit layer. Pour the silky cake batter over the top and smooth it out, ensuring even coverage for an even bake.
Step 7: Create and Sprinkle the Crumb Topping
Mix melted butter, flour, sugars, salt, and cinnamon until crumbly. This topping will bake into a delightful crunchy layer, adding texture and extra sweetness that contrasts dazzlingly with the tart rhubarb beneath.
Step 8: Bake the Cake
Bake for 45 to 55 minutes, until a toothpick inserted near the center comes out with moist crumbs but no wet batter. The aroma of caramelizing rhubarb and spices will fill your kitchen by now, inviting eager taste testers.
Step 9: Cool and Invert the Cake
After removing the cake from the oven, let it cool in the pan for about 10 minutes. Then carefully loosen the edges and invert onto a cooling rack placed over a sheet tray to catch any juices. Cooling fully lets the cake firm up and develop that stunning upside-down appearance.
Step 10: Store the Finished Cake
Once fully cooled, you can store the cake at room temperature, covered tightly, for up to 3 days or in the refrigerator for as long as 6 days—perfect for stretched-out celebrations or sweet cravings throughout the week.
How to Serve Rhubarb Upside Down Cake Recipe
Garnishes
A dusting of powdered sugar or a dollop of lightly whipped cream complements the cake beautifully without overpowering its delicate flavors. You might also add a few fresh rhubarb ribbons or a small sprig of mint for added elegance and a hint of green that pops visually.
Side Dishes
Serve the cake alongside a scoop of vanilla ice cream or a spoonful of crème fraîche to add a creamy counterpoint to the tart rhubarb. A hot cup of tea or coffee also pairs exceptionally well, creating a cozy moment for any time of day.
Creative Ways to Present
For entertaining, cut the cake into smaller squares and serve on pretty dessert plates with a drizzle of citrus glaze or a sprinkle of toasted almonds. You can also layer slices with whipped mascarpone in a trifle bowl for a stunning and slightly unexpected twist.
Make Ahead and Storage
Storing Leftovers
Once cooled, store leftovers in an airtight container at room temperature for up to three days, or refrigerate for up to six days. This ensures the cake stays moist without drying out, letting you enjoy those flavorful bites long after baking.
Freezing
If you want to save some for later, this cake freezes beautifully. Wrap individual slices or the whole cake tightly in plastic wrap and then foil to prevent freezer burn. Thaw overnight in the fridge before serving to preserve texture and flavor.
Reheating
Warm slices gently in the microwave for 15-20 seconds or in a low oven (about 300℉) for 10-15 minutes to revive that just-baked softness and melt-in-your-mouth texture. Reheating brings back the fresh-baked aroma and enhances the cake’s comforting qualities.
FAQs
Can I use frozen rhubarb for this cake?
Yes, you can substitute frozen rhubarb, but be sure to thaw and drain it well to avoid excess moisture altering the cake’s texture. Pat the rhubarb dry before mixing with sugar to keep the topping from becoming too soggy.
Is there a way to make this cake dairy-free?
Absolutely! Substitute the butter with dairy-free margarine or coconut oil and swap sour cream for a thick non-dairy yogurt or coconut cream. The flavor will be slightly different but still deliciously moist and flavorful.
Why does the cake batter look runny?
The batter seems thinner due to the sour cream and milk, which help keep the cake extra moist and tender. This is completely normal and results in a delectably soft crumb after baking.
Can I make this cake in a different pan size?
A 9-inch pan is ideal for the thickness and bake time, but you can use a similar-sized round pan with a few minutes adjustment in baking time. For larger pans, the cake will be thinner and may bake quicker, so keep an eye on it.
What if I don’t have turbinado sugar for the topping?
It’s optional and only adds crunch and sparkle. If you don’t have it on hand, simply use the granulated and brown sugar mixture alone. Your crumb topping will still be delightfully sweet and crisp.
Final Thoughts
This Rhubarb Upside Down Cake Recipe is one of those desserts you’ll want to keep coming back to. Its vibrant flavors, luscious textures, and beautiful presentation make it a true crowd-pleaser. Whether you’re baking for a special occasion or just a cozy weekend treat, this cake offers pure joy in every bite. Give it a try and prepare for lots of compliments and requests for seconds!
