Okay, let’s talk dessert—specifically, the kind that makes you do a little happy dance with every bite. This Upside-Down Rhubarb Cake with Caramel Swirls is a celebration of sweet and tangy, soft and sticky, cozy and luxurious all rolled into one dreamy slice. Picture this: a glossy layer of tart rhubarb nestled in golden caramel, all sitting atop a buttery, moist cake with delicate swirls of rich caramel running through every bite. I mean… come on.
It’s the kind of dessert that feels fancy enough to serve at a dinner party, but easy enough to whip up on a lazy weekend afternoon. And the best part? When you flip it out of the pan and see that jewel-toned rhubarb glistening on top, you’ll feel like an absolute baking rockstar. So go ahead—grab a fork (and maybe a scoop of vanilla ice cream while you’re at it). You’re about to fall in love.
Why You’ll Love Upside-Down Rhubarb Cake with Caramel Swirls
This recipe isn’t just about the ingredients—it’s about creating moments. Whether you’re cooking for a casual family dinner, hosting a get-together with friends, or simply indulging in some comforting flavors for yourself, this dish is versatile enough to fit the occasion. Here’s why it’s a favorite:
Versatile: This cake is a total showstopper at spring and summer gatherings, but it’s also perfect for brunch or even as a sweet afternoon treat with coffee or tea.
Budget-Friendly: Rhubarb is often inexpensive and plentiful during the season. Paired with pantry staples like flour, sugar, and eggs, this cake proves you don’t need fancy ingredients to create something fabulous.
Quick and Easy: The steps are simple and straightforward—no special equipment, no fuss. If you can stir and flip, you’ve got this!
Customizable: Want to add strawberries? Go for it. Prefer a cinnamon-spiced cake base? Easy tweak. This cake is endlessly adaptable.
Crowd-Pleasing: That balance of tangy rhubarb and sweet caramel? Irresistible. Everyone will be asking for the recipe, trust me.

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Ingredients in Upside-Down Rhubarb Cake with Caramel Swirls
This cake is all about contrasts—bright rhubarb, rich caramel, and fluffy cake. And yet, it all comes together with a few humble ingredients:
Rhubarb:
The star of the show. Tart, vibrant, and gorgeously pink, rhubarb melts into a jammy layer that beautifully balances the sweetness of the cake.
Caramel Sauce:
Rich and buttery with hints of vanilla, the caramel adds depth and a luscious, sticky layer that makes this cake unforgettable.
Brown Sugar:
Used in both the caramel and the cake, it adds a subtle molasses note that plays so well with the tart rhubarb.
Unsalted Butter:
For that moist, tender crumb and golden, buttery flavor. It also forms the base of the homemade caramel.
Eggs:
They bind everything together and give the cake its rich, fluffy structure.
All-Purpose Flour:
The reliable base for our cake—light, tender, and perfect for soaking up all those rhubarb juices.
Baking Powder:
Gives the cake its lift, ensuring a soft, airy texture.
Vanilla Extract:
A warm, fragrant boost of flavor that ties everything together.
Milk (or Buttermilk):
Adds moisture and tenderness to the cake. Buttermilk, if you use it, adds a lovely tang that complements the rhubarb.
Instructions
Let’s dive into the steps to create this flavorful masterpiece:
Preheat Your Equipment:
Preheat your oven to 350°F (175°C). Grease a 9-inch cake pan and line the bottom with parchment paper to ensure a smooth flip later.
Combine Ingredients:
In a saucepan, melt butter and brown sugar together to make your caramel. Stir until smooth, then pour it into the bottom of your prepared pan. Top with chopped rhubarb in an even layer.
Prepare Your Cooking Vessel:
Once the caramel and rhubarb are in place, set the pan aside while you make the cake batter. This gives the caramel a little time to cool and set slightly.
Assemble the Dish:
In a mixing bowl, cream together butter and sugar until light and fluffy. Add the eggs one at a time, then stir in vanilla. Alternate adding flour and milk, mixing gently just until combined. Pour the batter over the rhubarb-caramel layer, spreading it evenly.
Cook to Perfection:
Bake for about 40–45 minutes, or until a toothpick inserted into the center comes out clean. The top should be golden and spring back lightly when touched.
Finishing Touches:
Let the cake cool in the pan for 10–15 minutes (not too long, or the caramel might stick!). Then carefully invert it onto a serving plate and peel away the parchment. That glossy rhubarb topping? Pure magic.
Serve and Enjoy:
Slice it up while it’s still slightly warm for maximum gooey caramel effect. Top with whipped cream, ice cream, or enjoy just as it is.
Nutrition Facts
Servings: 8
Calories per serving: [Insert calorie count here]
Preparation Time
Prep Time: 15 minutes
Cook Time: 45 minutes
Total Time: 1 hour
How to Serve Upside-Down Rhubarb Cake with Caramel Swirls
- With Ice Cream: A scoop of vanilla ice cream slowly melting into the warm cake? Absolute heaven.
- With Whipped Cream: Light, fluffy, and just sweet enough to complement the tartness.
- Fresh Berries: Add sliced strawberries or raspberries on the side for extra color and freshness.
- As a Breakfast Treat: Hey, it has fruit, right? Pair it with coffee for a special brunch moment.
- Warmed Up Later: Pop leftovers in the microwave for 10–15 seconds to revive that just-baked feeling.
Additional Tips
- Prep Ahead: Chop your rhubarb and make the caramel ahead of time to save minutes on baking day.
- Spice It Up: Add cinnamon or ginger to the cake batter for a warm, spiced version.
- Dietary Adjustments: Make it dairy-free with plant-based butter and milk alternatives.
- Storage Tips: Store covered at room temp for 1 day or refrigerate for up to 4. Reheat gently before serving.
- Double the Batch: Baking for a crowd? This recipe scales beautifully for a 9×13-inch pan—just watch the baking time.
FAQ Section
Q1: Can I use frozen rhubarb?
A1: Yes, just thaw and drain it well to avoid excess moisture.
Q2: Can I make this cake in advance?
A2: Definitely! Bake the day before, and reheat slices gently before serving if you like it warm.
Q3: How do I store leftovers?
A3: Wrap tightly and keep in the fridge for up to 4 days. Bring to room temp or warm before eating.
Q4: Can I freeze this cake?
A4: Yes! Wrap tightly and freeze for up to 1 month. Thaw in the fridge overnight.
Q5: What’s the best way to reheat this cake?
A5: A quick zap in the microwave (10–15 seconds) or a warm oven will do the trick.
Q6: Can I add other fruit to the rhubarb layer?
A6: Absolutely! Strawberries are a natural match, or try apples or peaches for a seasonal twist.
Q7: Is this recipe suitable for vegetarians?
A7: It is! Just make sure your caramel ingredients are veggie-friendly.
Q8: What kind of pan works best?
A8: A nonstick or well-greased metal cake pan works great. Avoid springform pans, as the caramel may leak.
Q9: How can I make this cake healthier?
A9: Reduce the sugar slightly or use a sugar alternative. You can also sub in some whole wheat flour for extra fiber.
Q10: Can I skip the caramel?
A10: You could, but honestly—it’s the best part! If you’re watching sugar, a simple rhubarb compote topping can be a lighter swap.
Conclusion
If you’re looking for a dessert that’s equal parts stunning and satisfying, this Upside-Down Rhubarb Cake with Caramel Swirls is it. It’s rustic, it’s elegant, and it’s absolutely bursting with flavor. Whether you’re new to baking or a seasoned pro, this recipe is guaranteed to bring smiles to the table—and maybe even a few happy sighs. So go ahead, make it once, and watch it become a new favorite. You’ve got this!
Print
Upside-Down Rhubarb Cake with Caramel Swirls
- Total Time: 1 hour 10 minutes
- Yield: 1 9-inch cake (8 servings) 1x
- Diet: Vegetarian
Description
A springtime twist on a classic dessert! This Upside-Down Rhubarb Cake features tart rhubarb atop a moist vanilla cake, all laced with rich caramel swirls that bake into a stunning golden finish.
Ingredients
- 2 cups fresh rhubarb, diced
- 1/2 cup granulated sugar
- 1 tablespoon lemon juice
- 1/4 cup unsalted butter, melted (for topping)
- 1/2 cup brown sugar, packed
- 1/4 cup caramel sauce (store-bought or homemade)
- 1 1/2 cups all-purpose flour
- 1 teaspoon baking powder
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 1/2 cup unsalted butter, softened (for cake)
- 2/3 cup granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- 1/2 cup sour cream
- 1/4 cup milk
Instructions
- Preheat your oven to 350°F (175°C). Grease a 9-inch round cake pan and line the bottom with parchment paper.
- In a bowl, toss the diced rhubarb with 1/2 cup granulated sugar and lemon juice. Set aside for 15 minutes to macerate.
- Pour the melted butter into the bottom of the cake pan. Sprinkle evenly with brown sugar and drizzle the caramel sauce over the top.
- Drain any excess liquid from the rhubarb and spread it evenly over the caramel layer in the pan.
- In a separate bowl, whisk together the flour, baking powder, baking soda, and salt.
- In a mixing bowl, cream the softened butter with the 2/3 cup sugar until light and fluffy. Beat in the eggs one at a time, then add vanilla.
- Stir in sour cream and milk until combined. Gradually add the dry ingredients and mix until smooth.
- Gently spread the batter over the rhubarb layer in the pan, smoothing the top.
- Bake for 40-45 minutes or until a toothpick inserted into the center comes out clean.
- Let the cake cool in the pan for 10 minutes, then run a knife around the edges and invert it onto a serving plate. Let cool completely before serving.
Notes
- Use red rhubarb for the most vibrant color on top.
- Caramel sauce can be homemade or high-quality store-bought.
- Try serving with a dollop of whipped cream or vanilla ice cream.
- Prep Time: 25 minutes
- Cook Time: 45 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 380
- Sugar: 30g
- Sodium: 190mg
- Fat: 18g
- Saturated Fat: 11g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 50g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 75mg