Rhubarb Upside Down Cake

The Spring Cake You Will Make Every Year

Rhubarb is one of those ingredients that has a devoted fan club for good reason. Its bold, tart personality is unlike anything else at the farmers market, and when it meets heat and brown sugar, something almost magical happens. The sharp edges soften, the color deepens to a gorgeous ruby-pink, and the whole thing becomes jammy, tender, and deeply flavorful.

This Rhubarb Upside Down Cake is the best possible vehicle for all of that. A generous layer of caramelized rhubarb sits on top of a buttery, classic vanilla cake that is just sturdy enough to hold everything together but still wonderfully moist and tender inside. Every single slice is a showstopper.

The flip at the end is a little theatrical, and honestly, that is part of the fun.

Why This Recipe Works

A lot of upside down cake recipes end up with a soggy bottom (which becomes the top) or a caramel that crystallizes instead of staying glossy and soft. This recipe avoids both problems.

• Brown sugar over granulated sugar in the topping gives you a deeper, more complex caramel with less risk of crystallizing.
• The 10-minute rest before flipping is the secret weapon. It lets the caramel firm up just enough to cling to the rhubarb without running off the cake.
• Alternating wet and dry ingredients in the batter creates a crumb that is tender and even, never dense or gummy.

Chef's Tip: Choose rhubarb stalks that are firm and deeply colored. The redder the stalk, the more vivid your topping will be. Pale green stalks taste just as good but will give you a more muted result.

Getting Set Up

This is a simple, one-bowl batter cake, but a few good tools make the process noticeably smoother. A well-calibrated oven and a reliable 9-inch cake pan are the two things that matter most here.

Tools & Ingredients We Recommend

Mixing Bowls

Small Bowls Set

Sharp Kitchen Knife

A Few Notes on Rhubarb

If you have never cooked with rhubarb before, welcome. A few things worth knowing:

• Only the stalks are used. Rhubarb leaves are toxic and should never be eaten.
• It is very tart raw, which is exactly why it pairs so well with sugar and vanilla.
• Fresh rhubarb is ideal, but well-dried frozen rhubarb works in a pinch. See the FAQ section below for tips.
• The classic pairing is rhubarb and strawberry, but rhubarb on its own, like in this cake, is genuinely underrated and deserves the spotlight.

The Flip: No Fear Required

If the thought of inverting a hot cake makes you nervous, you are not alone. Here is how to do it with confidence:

1. Let the cake rest in the pan for exactly 10 minutes on a wire rack.
2. Run a thin knife or offset spatula around the entire edge of the pan.
3. Place your serving plate face-down on top of the pan.
4. Hold both firmly and flip in one quick, decisive motion.
5. Let the pan sit for 30 seconds before lifting it away slowly.

If a piece or two of rhubarb sticks to the pan, just press it back into place. No one will ever know.

Ready to bake? Here is everything you need:

Rhubarb Upside Down Cake

This stunning Rhubarb Upside Down Cake features jammy, caramelized rhubarb on top of a buttery, tender vanilla cake. It is the perfect spring and summer dessert that is as beautiful as it is delicious.

Prep:20 mins

Cook:45 mins

Total:65 mins

Yield:8 servings

Cuisine:American

Yield: 8 servingsCalories: 310Protein: 4g

Carbs: 45gFat: 13gSat. Fat: 8gFiber: 1gSugar: 28gSodium: 210mg

Ingredients

Units

USM

Scale

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• 4 rhubarb stalks, trimmed and sliced into 0.5-inch pieces
• 4 tbsp unsalted butter, for the topping, melted
• 1/2 cup packed brown sugar, for the topping
• 1 1/2 cups all-purpose flour, spooned and leveled
• 3/4 cup granulated sugar
• 1 1/2 tsp baking powder
• 1/4 tsp salt
• 6 tbsp unsalted butter, for the batter, softened to room temperature
• 2 large eggs, room temperature
• 1/2 cup whole milk, room temperature
• 1 tsp pure vanilla extract

Instruction

1

Preheat your oven to 350 degrees F (175 degrees C). Grease a 9-inch round cake pan well on all sides.

2

Pour the melted butter into the bottom of the prepared cake pan and tilt to coat evenly. Sprinkle the brown sugar in an even layer over the butter.

3

Arrange the sliced rhubarb over the brown sugar layer in a single, even layer. Set aside.

4

In a medium bowl, whisk together the flour, baking powder, and salt until combined.

5

In a large bowl, beat the softened butter and granulated sugar together with a hand mixer or stand mixer on medium-high speed until light and fluffy, about 3 minutes.

6

Add the eggs one at a time to the butter mixture, beating well after each addition. Mix in the vanilla extract.

7

Reduce the mixer speed to low. Add the flour mixture in three additions, alternating with the milk in two additions, beginning and ending with the flour. Mix just until no dry streaks remain. Do not overmix.

8

Gently spread the cake batter over the rhubarb layer in the pan, smoothing the top with a spatula.

9

Bake for 40 to 45 minutes, or until a toothpick inserted into the center of the cake comes out clean and the top is golden brown.

10

Remove the cake from the oven and let it cool in the pan on a wire rack for exactly 10 minutes. Run a thin knife around the edge of the pan to loosen the cake.

11

Place a serving plate firmly on top of the cake pan, then carefully invert the cake in one confident motion. Lift the pan away slowly. If any rhubarb pieces stick, simply press them back into place.

12

Allow the cake to cool for at least 15 more minutes before slicing. Serve warm or at room temperature.

Equipment

• 9-inch round cake pan
• Hand mixer or stand mixer
• Large mixing bowl
• Medium mixing bowl
• Whisk
• Rubber spatula
• Wire cooling rack
• Thin offset spatula or butter knife

Notes

For the cleanest flip, do not skip the 10-minute cooling window in the pan. Too hot and the caramel runs; too cold and the cake sticks. Store leftovers loosely covered at room temperature for up to 2 days, or refrigerate for up to 4 days. Bring refrigerated slices to room temperature before serving for the best texture. This cake also freezes well for up to 2 months when wrapped tightly.

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Serving and Storing

This cake is stunning served slightly warm with a generous scoop of vanilla ice cream or a dollop of lightly sweetened whipped cream. The contrast between the warm, jammy topping and cold cream is deeply satisfying.

At room temperature, it holds beautifully and makes an excellent dessert for dinner parties because it can be made entirely ahead. It also travels well, which makes it a great option for potlucks or picnics.

Store any leftovers loosely covered at room temperature for up to 2 days, or in the refrigerator for up to 4 days. It also freezes surprisingly well, so if you find yourself with an abundance of rhubarb in the spring, bake two and freeze one for later in the summer when the season is long gone.