Mango Upside Down Cake
Mango Upside Down Cake is a new take on an old fashioned recipe. An ultra-tender cake made with buttermilk and almond flour is topped with fresh mango slices and buttery, lime-scented caramel.
Read on to find out how I destroyed and then repaired this cake…
So, a funny thing happened on the way to posting this recipe.
In fact, after a major kitchen blunder, I didn’t think I would be posting this recipe for at least another week. I thought I’d have to remake the cake to get a nice photo for you.
You might think that after 30 years of baking for a living I would no longer make stupid, completely avoidable mistakes. Well, I wish I could say that’s true. Honestly, I make dumb mistakes on a fairly regular basis.
Most of my baking disasters can be traced back to one thing, impatience!
This time I got impatient to turn out and finish this Mango Upside Down Cake. I wanted to shoot the photos before I lost the afternoon light, so I flipped the cake out just 4-5 minutes after it came out of the oven.
I’ll admit that after making 1000’s of cakes over 20+ years I have pushed the limits of flipping hot cakes out of the pan on many occasions.
That might be ok for a plain vanilla cake, but a cake that’s topped with gooey caramel and bubbling hot fruit is another story all-together. This time I didn’t get away with it, and this is what happened…
See what happens when you (and by “you” I mean “I”) flip a way-too-hot Mango Upside Down Cake out of the pan?
The cake cracks right down the middle and hot caramel and fruit slide off the cake. Lovely, isn’t it? Definitely not the most photogenic cake.
So, I took to social media to call myself out for impatience and figured I would have to make the cake again before getting photos. About half an hour later I walked back into the kitchen to deal with the mess I’d made.
How to fix a cake disaster
My younger self would probably have thrown the cake away. After 30 years of baking I still make dumb mistakes, but I’ve also learned how to fix a lot of those mistakes. They say you learn more from failure than from success. Here I was, presented with another great learning opportunity.
I took a look at the cracked cake, which by now was almost cooled, and I simply pushed the cake back together and rearranged the fruit on top. Here’s the repaired cake:
You’d never know that the lovely cake in this photo is the same one that almost fell apart. How could I put it back together? It’s science, baby!
Why did my cake fall apart?
- Flour is made up of protein and starch, both of which contribute to the structure of a cake.
- You can read more about flour in cake batter, but what’s important for this story is how the starch works.
- When you mix cake batter, the liquid in the recipe comes in contact with the flour. The starch in the flour absorbs some of the liquid, swells up, and gels.
- As the batter bakes, the swollen starch sets-up to help form the physical structure of the cake.
- Once the cake is out of the oven and cooling, the starch molecules begin to crystallize.
- If you flip the hot cake out of the pan too soon, the starch won’t have crystallized enough to support the cake structure. (In this case, the hot caramel and fruit on top certainly didn’t help.)
- I was able to repair my Mango Upside Down Cake when it had cooled enough for the starch to support the structure. Luckily, the starch was still soft enough to “glue” the cracks back together.
Was the repaired cake perfect? No. Admittedly, the slices with with cracks were a little wonky.
If someone was paying for for this cake I would have rebaked it. But it was fine to serve to my friends. They didn’t mind at all. It also looked good enough to photograph.
The Process for making Mango Upside Down Cake
See the recipe card for detailed measurements and instructions.
- Macerate the sliced mangoes with the sugar. This helps the mangoes keep their shape while baking.
- Boil the caramel for the topping.
- Layer the mangoes over the caramel and then spoon the cake batter over the mangoes.
- Spread the batter over the fruit.
- Bake until the center of the cake is set.
- Cool at least 10-15 minutes before turning out of the pan!
Anyway….the reason for this long and drawn out story it to remind you that everyone makes mistakes in the kitchen.
Also, remember that many of those mistakes can be fixed. Embrace your mistakes and consider them a learning opportunity.
If you love this recipe as much as I do, I’d really appreciate a 5-star review.
Mango Upside Down Cake
Ingredients
Topping
- 2 mangoes (peeled and sliced about ½" thick)
- 8 oz brown sugar (1 cup packed)
- 1 lime (finely grated zest and juice)
- 2 oz unsalted butter
Cake Batter
- 1 large egg
- 2 yolks
- 4 oz buttermilk (½ cup)
- 1 teaspoon vanilla extract
- 1 lime (finely grated zest)
- 6 ¾ oz cake flour (1 ½ cups, see note)
- 1 ½ teaspoons baking powder
- ¼ teaspoon table salt
- 8 oz granulated sugar (1 cup)
- 2 oz almond flour (½ cup)
- 4 oz butter (room temp, cut into 1″ pieces)
Instructions
- Preheat the oven to 350 °F. Line the bottom of a 9" square or 9 or 10" round pan with parchment paper or butter and flour the pan.
Topping
- Toss the mango slices with 8 oz brown sugar, finely grated zest and juice from 1 lime. Allow to macerate for 30 minutes to an hour. Drain the mango and reserve the juices.
- Combine the mango juice with 2 oz unsalted butter in a small saucepan and bring the mixture to a boil. Allow to boil for 1-2 minutes to thicken. You should end up with about 1 cup of caramel.
- Pour the warm caramel into the prepared pan. Arrange the mango slices in an attractive pattern onto the caramel. Place the pan in the freezer while preparing the batter.
Batter
- Combine 1 large egg, 2 yolks, ¼ cup (2 oz) of the buttermilk, 1 teaspoon vanilla extract and finely grated zest from 1 lime in a small bowl.
- Sift together 6 ¾ oz cake flour, 1 ½ teaspoons baking powder and ¼ teaspoon table salt in a mixing bowl, add 8 oz granulated sugar and 2 oz almond flour. Run the mixer on low speed for 30 seconds to combine the dry ingredients.
- Add 4 oz butter to the dry ingredients and mix until combined. Add the remaining ¼ cup of buttermilk to the flour and butter mixture. Turn the mixer to medium high for 2-3 minutes.
- Turn off the mixer and scrape the bowl and paddle. Add the egg mixture in two batches, scraping between additions.
- Starting from the outer edge of the pan, gently dollop the batter over the mango slices. Spread the batter to an even layer.
- Bake until the center of the cake springs back lightly when pressed, or a toothpick inserted in the center comes out clean, about 45 minutes. Cool in the pan for 15 minutes.
- Unmold the cake while it's still a little warm by running a paring knife around the sides of the cake and inverting onto a serving platter. If any caramel or mango slices stick in the pan scrape them out with a small spatula and replace on the cake while still warm.
- Serve warm or room temperature.
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The ingredient list calls for 1 whole egg and 2 egg yolks. The instructions never mentioned the yolks, so I added them with the egg. I hope that was the intention.
It says to bake for 30 minutes, but it took 1 hour and 5 minutes. At 30 minutes it was still very liquid.
It’s colling now, so I’m not sure how it tastes yet, but the instructions may need some editing.
Yes, I missed the yolks in the instructions. You were correct to put them in with the eggs. The timing for baking can vary for many reasons, but over an hour seems long. Do you have an oven thermometer? Perhaps your oven is running cooler than the set temp.
Hi Eileen! This sounds so delicious! Could this recipe be used for an old fashion Caramel Cake? Do you have a Caramel frosting recipe? Thanks in advance!