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    Home » Recipes » Cakes

    Published on: July 2, 2020 by Janice Lawandi; Updated on: April 4, 2024 25 Comments

    Rhubarb raspberry upside-down cake

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    Rhubarb raspberry upside down cake on a parchment lined round black tray, cut into a few slices with a cake lifter under a slice

    This rhubarb raspberry upside-down cake has a few raspberries tucked into the rhubarb fruit layer to enhance the colour of pink rhubarb while also lending lots of flavour and sweetness to this dessert

    Rhubarb raspberry upside down cake on a parchment lined round black tray, cut into a few slices with a cake lifter under a slice

    Disclosure: As an Amazon Associate, I earn from qualifying purchases.

    What is an upside-down cake?

    Upside-down cakes are traditionally made with rings of canned pineapple and pink maraschino cherries to add a pop of colour and sweetness to the retro, classic fruit dessert. That makes it particularly easy to bake this type of cake year round because you can always find canned pineapple at the grocery stores, and maraschino cherries too, regardless of the season.

    The fruit is baked on the bottom of the cake pan, underneath the cake batter. Once baked, the cake is flipped onto a serving plate to reveal the fruit layer that was hidden under the cake. This is how this dessert gets its name.

    Upside-down cakes are known for being very decorative because you can take time to arrange the fruit in a pattern which bakes into the cake, anchoring the fruit in place.

    Ingredients for rhubarb upside down cake with raspberries

    The upside-down cake recipe is a perfect example of a classic recipe that you can tweak to suit the seasons with the fresh local fruit at the market. You can imagine using summer berries mid-summer, or sliced peaches or nectarines in the late summer months. And in the spring and early summer, replacing the canned pineapple with flavourful stalks of rhubarb is ideal!

    Arranging rhubarb pieces at the bottom of a springform wrapped in foil to make upside down cake

    Some varieties of rhubarb are pink and sweet. Others are more green and sour. Early spring rhubarb and forced rhubarb are bright pink or red, sweeter and more tender, while late summer rhubarb is more green and very tart.

    Cooking and baking with rhubarb that is more green than pink can be a little disappointing because it turns into a beige-green colour that isn't quite what you'd expect when you think of rhubarb. That's where sneaking in some sweet pink raspberries or bright red summer strawberries can make your best rhubarb recipes even better, adding lots of sweetness to balance out the tart rhubarb, and also tons of vibrant colour to enhance those stalks of rhubarb that are more green than red.

    Spreading cake batter over a fruit and caramel layer to make an upside down cake in a springform pan wrapped in foil to stop the juices from leaking out

    Updates to this recipe

    The original rhubarb upside-down cake recipe first appeared in the New York Times and I started baking this rhubarb raspberry version in 2011. I've since converted it to metric weights so now you have both in the recipe below. I also did a little tweaking:

    • For colour and sweetness, I replaced part of the rhubarb with raspberries for the rhubarb layer
    • For the cake layer, instead of cake flour, I used a combination of all-purpose, lightened with ground almond. I replaced 60 grams (½ cup) of the flour with 50 grams (½ cup) ground almond

    The cake batter is a variation on the pound cake recipe, also called a quatre quarts (which is the French baking term for the pound cake). The pound cake is made with roughly equal weights of flour, butter, sugar, and eggs.

    The original recipe calls for cake flour, which is a softer, finer flour that has more starch and less protein than all-purpose or bread flours. Baking with cake flour leads to a more tender cake with is why many favour this baking ingredient. Where I live, cake flour is hard to find, so that's why I replaced it with all-purpose, which is more readily available. But instead of replacing one with the other, cup-for-cup, I replaced a portion of it with ground almonds for flavour and to lighten the texture of the cake layer and so that less gluten forms when the batter is mixed.

    Baked rhubarb upside down cake before flipping to show how golden brown it is on top

    Baking upside-down cakes: Tips & tricks

    Upside-down cakes are not hard to make, but when you are baking them, there are things you need to know to successfully make one, especially if you want to bake an upside-down cake with fresh or frozen fruit.

    Before baking prep the pan

    Upside-down cakes are baked in a springform pan because the sides of this pan are taller and so can accommodate a taller cake made from fruit and cake batter. Given the cake is baked with a thick layer of fruit and sugar on the bottom and because the cake is flipped to unmould and serve it, it's very important to properly prepare the cake pan before baking:

    1. Line the bottom of the pan with parchment, which is naturally non-stick
    2. Butter the sides of the pan as well as the parchment, again to ensure the cake doesn't stick and unmoulds cleanly

    Leaky springform pans

    Another issue you may run into, your springform might be too leaky to contain the syrupy sweet fruit juices that form as the cake bakes. Springforms are notorious for this reason and I have yet to work with a pan that doesn't leak, regardless of price point.

    It's imperative that you wrap the springform with two layers of durable aluminum foil. This way, you won't need to place it on a sheet pan. And if the pan leaks, the juices aren't lost, they won't burn on the bottom of your oven, and you can simply pour them over the cake after you unmould it.

    The fruit layer

    You'll notice for the fruit layer in this recipe, we incorporate a little cornstarch. With canned pineapple, you probably won't see that because canned pineapple has less moisture. Remember rhubarb has a ton of water trapped inside and as the fruit cooks, it breaks down, releasing all that water. That's why we need to add cornstarch for this version of the upside-down cake: to gel the water so that the fruit layer is less soupy.

    Getting the cake to bake properly

    All upside-down cakes pose a unique challenge because of the fruit layer on the bottom of the cake pan: this fruit layer insulates the bottom of the cake, slowing the baking of the cake significantly. Furthermore, most upside-down cakes are quite thick and tall, and that depth increases the baking time even more.

    For these reasons, baking upside-down cakes all the way to the centre can be tricky. You have to make sure that the part of the cake that is adjacent to the fruit layer is baked, and for this cake, it takes at least 1 hour 45 minutes to properly bake a 9-inch diameter cake that is so tall. If you aren't careful, you may end up with a wet, gummy, or raw cake in the middle!

    After baking

    You can't cool the cake completely in the springform because we need to be able to unmould it: otherwise, the cake will adhere to the sides of the pan, and the fruit syrup will set and stick to the parchment if the cake gets too cold.

    For this reason, you can only cool the cake briefly in the pan, just long enough to be able to handle it. Fifteen minutes is all you need to wait before flipping it onto a serving plate:

    • let the hot cake cool 15 minutes before un-moulding
    • run a knife along the edge between the edges of the cake and the sides of the pan to loosen it
    • place a large plate over the pan
    • place your left palm flat under the cake pan and place your right palm flat on top of the plate to hold them together
    • flip swiftly holding, maintaining the pressure of your palms on the plate and the pan. Don't hesitate just do it!
    • lift the pan upwards slowly and gently to release it OR unlock the buckle of the springform to release the sides, then carefully peel to springform base off the fruit layer

    If any fruit stick to the parchment, don't panic! Just transfer them back where they belong!

    Raspberry rhubarb upside down cake on a parchment lined black round tray

    With upside-down cakes, it's important to take the time to melt the sugar for the fruit layer, which helps reduce sugar crystallization when the cake is baked. The thing to note is that your brown sugar quick caramel may crystallize in the pan, while you prepare the rest of the cake. If this happens, don't panic. The cake takes so long to bake and with the fruit juices, the caramel will dissolve because both the rhubarb and the raspberries have a lot of water.

    On the other hand, for a pineapple upside-down cake, you may have to take extra steps to prevent crystallization because the fruit isn't as juicy. A squeeze of lemon juice added to the brown sugar mixture when it's on the stove can help too, as can a spoonful of honey, both of which help prevent crystallization of sugar syrups.

    If you don't have sour cream, a baking substitution you can try is to replace it with the same volume of full-fat Greek yogurt (around 10 % fat if possible). Low-fat works too, but the reduction in fat may lead to a dryer cake or have an impact on texture..

    📖 Recipe

    Raspberry rhubarb upside down cake on a parchment lined black round tray

    Rhubarb Raspberry Upside-down Cake

    AuthorAuthor : Janice Lawandi
    This moist rhubarb raspberry upside-down cake is made with ground almonds to lighten the cake layer and raspberries to add colour to the fruit layer.
    5 from 1 vote
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    Prep Time 25 minutes mins
    Cook Time 1 hour hr 45 minutes mins
    Total Time 2 hours hrs 10 minutes mins
    Course Dessert
    Cuisine American
    Servings 12
    Calories 452 kcal

    Equipment

    • OXO balloon whisk
    • 9-in springform
    • Braun mixer
    • GIR spatula
    Need measurements in CUPSUse the button options below to switch from Metric to US measurements! It's that easy!

    Ingredients
     
     

    For the quick caramel sauce

    • 58 grams unsalted butter
    • 100 grams light brown sugar

    For the fruit layer

    • 450 grams fresh rhubarb cut into pieces to help them fit the springform from about ½ to 4 inches
    • 170 grams fresh raspberries or frozen
    • 100 grams granulated sugar
    • 10 mL cornstarch

    For the cake layer

    • 190 grams bleached all-purpose flour
    • 50 grams ground almonds
    • 6.25 mL baking powder
    • 0.625 mL Diamond Crystal fine kosher salt
    • 230 grams unsalted butter room temperature
    • 250 grams granulated sugar
    • 5 mL pure vanilla extract
    • 4 large egg(s) room temperature
    • 80 mL sour cream (14% fat) or full-fat Greek yogurt

    Instructions
     

    • Preheat the oven to 325°F.
    • Prepare a 9-inch springform pan by lining the bottom with parchment (I basically cut a large square of paper, place it on the base, then clip the sides over so that the paper runs right through the springform). Butter the paper and the sides of the springform pan. Wrap the outside of the pan with 2 large sheets of aluminum foil (in case your springform is as leaky as mine is). Set aside.

    Make the quick caramel sauce

    • In a small saucepan, melt the butter and brown sugar until it gets bubbly. Let it bubble for about 2 minutes, stirring constantly.
    • Pull the pan off the heat and pour the mixture into the bottom of the prepared pan. Smooth it out so that it forms an even layer. Set aside.

    Prepare the fruit

    • In a medium bowl, combine the fruit with the granulated sugar and cornstarch. Mix it carefully to not damage the raspberries too much, and let it sit. Stir the fruit every few minutes to evenly distribute the starch and sugar.

    Make the cake batter

    • Whisk together the flour, ground almonds, baking powder, and salt in a medium bowl. Set them aside.
    • In the bowl of an electric mixer fitted with the paddle attachment, cream the butter and the granulated sugar.
    • Add the vanilla, and then the eggs, one at a time, beating well, and scraping down the sides of the bowl after each addition. Don’t worry if the batter looks curdled at this point.
    • Alternately, add the dry ingredients (one-third at a time) and the yoghurt (half at a time), beginning and ending with the dry ingredients. Be sure to scrape down the sides and the bottom of the bowl occasionally.

    Assemble the upside-down cake and bake

    • Arrange the fruits evenly on top of the sugar layer (either decoratively or just neatly arrange them to fit snuggly). Pour the juices over the fruit.
    • Dollop the cake batter carefully over the fruit being sure to smooth the top without disturbing the fruit layer. Bang the pan on the counter so as to remove any air pockets (you could also swirl a knife through carefully to remove any air pockets, just be sure to avoid the fruits at the bottom).
    • Bake for 1 hour 40 minutes to 1 hour 50 minutes, until a cake tester inserted into the centre of the cake comes out clean. Because the cake is tall, it takes a long time to bake the middle so make sure you bake it for long enough!
    • Let the cake cool for 15 minutes in the pan, then place your serving plate over top, and flip it very carefully because the fruit juices are boiling hot! Set the plate on a wire rack to cool completely. Do not let the cake cool in the pan because the fruits and juices will stick to the bottom, and you’ll have a hard time getting it out after.

    Nutrition

    Calories: 452kcalCarbohydrates: 55gProtein: 5gFat: 25gSaturated Fat: 14gCholesterol: 110mgSodium: 54mgPotassium: 244mgFiber: 2gSugar: 39gVitamin A: 763IUVitamin C: 7mgCalcium: 98mgIron: 1mg
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    Comments

    1. Maggie Owens says

      May 24, 2021 at 7:14 pm

      Everything was going so well until my husband decided to help me flip the cake over after the 15 minute wait. His thinking... we need to get this hot mess over the sink.... so, leaving a trail of sticky goodness across the stove and the counters we moved to the sink, where he proceeded to flip the cake onto a wire rack, dropping half the cake into the sink in the process. I was so mad I literally couldn’t speak for a few minutes.

      It’s still pretty, what’s left of it, and it tastes great. We didn’t really need to eat all that cake anyway. Wish I could post a photo.

      Thanks for letting me vent. We are still married.

      Reply
      • Janice says

        May 25, 2021 at 11:33 am

        What a story!!!! I'm glad you were able to salvage some of the cake so that you could still enjoy it after all that. Otherwise, there would have been trouble 😉

        Reply
    2. Louisa Rodrigues says

      September 05, 2019 at 7:33 am

      ??

      Reply
    3. Annissa says

      March 12, 2014 at 2:09 pm

      LOVE this! I found your recipe after searching for a raspberry/rhubarb dessert. It looks like a great cake. I'll be making it for my Horticulture Club tonight! I'm sure they'll love it, a precursor to spring with last year's frozen fruits.

      Reply
    4. Bri Bandick says

      July 09, 2013 at 11:21 am

      Im really excited to try this recipe but im confused by the butter measurements. I cant get the butter in sticks where I am and the fruit layer says half a stick is 57g, then the cake layer calls for 2 sticks which are 114g, do you mean each stick is 114g and I should use 228g for that layer?

      Reply
      • Janice Lawandi says

        July 09, 2013 at 1:25 pm

        You're right! The fruit layer definitely contains 57 grams of butter (1/2 stick) and the cake layer should say 230 grams of butter (2 sticks). So sorry about the typo! I will change it now.
        I hope you enjoy this cake as much as I did!

        Reply
      • Bri Bandick says

        July 14, 2013 at 7:01 pm

        Mm yes, superb recipe, thank you!

        Reply
      • Janice Lawandi says

        July 22, 2013 at 1:47 pm

        Awesome! I'm so glad that it worked out and you enjoyed it 🙂

        Reply
    5. Anonymous says

      November 15, 2012 at 9:32 pm

      So you didn't precook the rhubarb like you originally thought?

      Reply
      • Janice Lawandi says

        November 16, 2012 at 1:03 am

        Nope! It worked out really nicely and the rhubarb cooked along with the cake in the oven.

        Reply
    6. The Procrastobaker says

      June 25, 2011 at 8:30 am

      This looks so PRETTY 🙂 I love the way the rhubarb and raspberries have stained the cake that lovely vibrant pink, it looks delicious, oh i just want a slice right now!

      Reply
    7. Jan says

      June 18, 2011 at 8:20 pm

      Forced rhubarb! I had no idea! Thanks for the info 🙂

      Reply
    8. Aveen says

      June 17, 2011 at 10:29 am

      That looks amazing and sounds absolutely delicious! I have loads of rhubarb to use up, I might give this a try.

      The really bright pink rhubarb (at least here in the UK) is forced rhubarb. They grow it indoors in the dark and harvest it by candlelight! Unfortunately you can only get it January to March. The stuff I have now is more green than pink but hopefully will still taste yummy 🙂

      Reply
    9. Georgia says

      June 14, 2011 at 12:45 pm

      Great photos!!! I saw this recipe and almost made it. Glad it turned out well! I like your changes 🙂

      Reply
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    Disclosure: As an Amazon Associate, I earn from qualifying purchases.

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