30 Minute Healthy Chocolate Cake

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This healthy chocolate cake will blow your mind. Moist and gooey and covered in a delicious 3-ingredient healthy chocolate ganache, no one will believe it’s a healthy cake. It’s refined sugar free, dairy free and contains not one but two hidden vegetables!

Closeup of a fork cutting into a piece of 30 minute healthy chocolate cake on a white plate and background

It’s finally here. The easy chocolate cake of your dreams. A HEALTHY chocolate cake. Or at least a healthi-ER chocolate cake. As one reader put it, “It’s sneakily healthier. So my brain will be happy.”

One of my favourite easy chocolate dessert recipes is this incredible 6-ingredient gooey Swedish chocolate cake. It’s oozy, super chocolaty heaven, and I’ll continue making it when I need a delicious crowd pleasing dessert in a hurry.

But as it isn’t the healthiest thing to eat, I thought I’d try to come up with a healthier chocolate cake recipe that tastes just as good.

And it really does!

What’s so great about it?

  • It’s really moist and gooey with a rich chocolate flavor. You just CAN’T TELL it’s a healthy cake.  
  • It’s covered in a super quick and easy thick layer of healthy chocolate frosting (tastes like mousse!).
  • It’s such an easy recipe, made with only 8 easy-to-find wholesome ingredients.
  • It’s a very quick healthy cake, out of the oven in just 30 minutes.
  • It’s packed with ‘hidden’ superfoods (yes you read that right) – sweet potato and avocado! But don’t worry, you don’t taste either.
  • It makes a perfect healthier birthday cake! I made it for my son’s second birthday. I doubled the ingredients and made a ‘digger cake‘. It came out so well!
closeup of part of a 30 minute healthy chocolate cake on a white plate

About the ingredients

There are several ways to make healthy chocolate cakes, of course. But I really wanted to stick to ingredients that you already have in your pantry, or are really easy to find.

This is all you need.

For the cake (7 simple ingredients)

  • Self-raising flour: Note that this is not the same as ‘self rising flour’ that you’ll find in the US. To make your own self-raising flour, simply mix 1.5 teaspoons of baking powder into a cup of all-purpose flour. The recipe also works with whole wheat flour!
  • Olive oil: I like to use a light olive oil for its health properties. I don’t think you can taste it in the finished cake. You can however use another type of oil if you prefer, such as canola oil, avocado oil or melted coconut oil. One reader even replaced half of the oil with Greek yogurt and said it worked really well although she had to bake for slightly longer.
  • Eggs: You’ll need 3 large eggs. It is also possible to make this cake egg free. Check out the FAQ section below for ideas!
  • Cocoa: Because this cake has a lovely deep chocolaty flavor, I’d recommend using a high quality unsweetened cocoa powder. You can use cacao powder instead, but it might have a slightly more bitter flavor.
  • Mashed sweet potato: Surprise! You’ll need a whole cup of cooked sweet potato to make this cake. No one will taste it, but you’ll feel smug watching everyone tuck into their gooey dessert knowing that it’s got a hidden veggie in it, right?
  • Maple syrup: Make sure you get pure maple syrup and not a cheaper maple-flavored syrup (which is really just sugar).
  • Vanilla extract: Just a teaspoon for extra flavor.

For the frosting/ganache (3 simple ingredients)

ingredients for Healthy chocolate frosting including sliced open avocados, cocoa and maple syrup on a white marble background
Just 3 ingredients!
  • Avocado: The second ‘hidden vegetable’! As with the sweet potato, you don’t really taste it in the finished cake. Make sure you plan ahead so that you have ripe avocado that will blend easily.
  • Maple syrup: More of the good stuff! You can replace with another kind of healthy syrup such as agave syrup or date syrup if you like.
  • Cocoa: As in the cake batter, make sure you use a good quality cocoa for the best chocolaty flavor.

So that’s just 8 main ingredients! (plus a tiny bit of baking soda & salt)

How do you make a healthy chocolate cake?

Could this cake get any better? Not only is it a healthier chocolate cake recipe, it’s so quick and easy to make. Even the sweet potato part is simple!

Here’s what you do.

Step 1: Prepare the sweet potato. Cook a medium sweet potato in the microwave until soft (6 to 8 mins). Then split open the skin and scoop out the flesh. It mashes really easily with a fork, or if you’d prefer to get it completely smooth you could pulse it for a few seconds in your food processor.

Collage of 2 images showing how to make the batter for a healthy chocolate cake

Step 2: Whisk the wet ingredients (eggs, vanilla, oil and maple syrup) into the sweet potato.

Step 3: Stir in the dry ingredients (flour, baking soda, cocoa, salt).

Step 4: Pour into a springform pan lined with baking paper.

Unbaked 30 minute healthy chocolate cake from above - ready to go in the oven
Before

Step 5: Bake for 18 minutes for the best results. I know that’s very specific but you want the top to be set but the inside still a little gooey.

View of the top of  a 30 minute healthy chocolate cake just out of the oven on a cooling rack
After

Step 6: Let cool completely. Make the frosting while you’re waiting!

I know, I’m cheating a bit by calling this a 30 minute cake. You do of course need a bit of extra time for cooling and adding the frosting!

How to make a healthy frosting

2 images showing how to make healthy chocolate frosting for a chocolate cake in a food processor

This cake reminds me of a retro Sara Lee chocolate gateau (remember those?). The thick mousse-like chocolate frosting tastes very similar to the Sara Lee version. But of course it’s much healthier.

To make it just blend together the ripe avocado, cocoa and maple syrup. That’s honestly all you have to do. It’ll take just minutes.

You can even make it ahead if you like. Surprisingly, it keeps well. Just cover and keep in the fridge. The avocado won’t go brown.

Healthy chocolate frosting from above in a blue and red bowl
Closeup of someone spreading frosting on a 30 minute healthy chocolate cake with a spatula
Spread it on thickly… it tastes as good as it looks!

Does it taste of avocado? Hmmm. If you close your eyes and think about it, yes.

But I don’t mind. I really like the rich, clean, super chocolaty taste and the smooth texture. You could even serve this frosting by itself as a chocolate mousse.

Or use it as a healthier topping for brownies or cupcakes.

What does a healthy chocolate cake taste like?

I remember agonising over what to call this. It isn’t exactly fudge cake, and it isn’t mud cake either. It’s something in between, and the exact texture varies depending on how long its in the oven – or the particular oven you have.

The first time I made it, it was a bit less gooey. Still delicious and moist, but more like a regular cake-y chocolate cake.

But the true magic happened the next time I made it. I took it out of the oven a bit sooner, and I slathered it in the healthy chocolate mousse frosting / ganache.

And it was perfect. As already mentioned, avocado and sweet potato haters can relax because you really don’t know they’re there. 😉

Had mixed results with healthy cake recipes? This is a keeper for me! it tastes like a decadent dessert. It’s so deliciously gooey and chocolaty – but without the guilt!

Slice of 30 minute healthy chocolate cake on a white plate and with a fork

So if you’ve been searching for healthy cake recipes, maybe the search is over! Enjoy a piece (or two) of this without an ounce of guilt.

How to serve it

This cake really doesn’t need anything else with it. I usually grate a little dark chocolate over the top and I’m done.

But if they happen to be in season, why not pile some strawberries or other fresh berries on top just before serving?

Many readers have also used this recipe for their child’s birthday cake. It’s so easy to double the recipe and make 2 cakes instead of one. I’d also recommend doubling the frosting and using half to sandwich the cakes together and half to go on the top.

You can enjoy any leftovers with a spoon straight out of the bowl!

I even used this recipe to make a digger (construction) cake for my son’s second birthday. It was so easy to make!

Helen’s top tips

  • Don’t overbake this cake! The baking time might vary a little depending on your oven, but I find 18 minutes is perfect.
  • This can be a single layer, double layer or even triple layer cake. Just double or triple the ingredients, and pour into 2 or 3 round baking pans instead of one.
  • If you have any sweet potato left over, freeze for next time!

More things to know (recipe FAQ)

How should I store this cake?

Keep it in the fridge in an airtight container. It will keep well like this for at least 3 to 4 days, and probably longer.

Can I freeze it?

Surprisingly, yes!

When I first tried freezing this, I expected the cake part to freeze just fine, but I assumed the avocado ganache part wouldn’t. But it does! When defrosted I really couldn’t tell the difference from when it was fresh. I froze it in the middle of a large container with a lid (so that the ganache didn’t get all over the sides!) and it was fine.

You may find it easier to freeze without the ganache, though. Make the cake, then whip up the quick ganache just before serving.

Can I make the cake without eggs?

I haven’t tried making this cake without eggs myself. However, a reader made the cake twice, substituting the eggs with 3 tablespoons of Greek yogurt and said it worked very well!

Here’s a good article with information about possible substitutes for eggs.

Can I use a different type of flour e.g. wholemeal, gluten free, oat?

Yes! While I haven’t tried using all of these substitutes myself, others have. They work. 🙂

Can I use a different sweetener?

Honey, agave syrup, date syrup or rice malt syrup work instead of maple syrup if that’s what you have or prefer. You can even add a little brown sugar if you’re short on maple syrup.

Once, I completely forgot to add the maple syrup. The cake turned out with exactly the same texture and still tasted OK once I’d added the sweet frosting. Whoops.

Is this a low calorie chocolate cake?

No, it isn’t. It’s full of healthy ingredients, but some of them are quite calorific. If you’re on a calorie controlled diet, I suggest simply having a smaller piece. Enjoy!

I’m absolutely delighted to have discovered such a delicious (not to mention quick and easy) version of one of my favourite foods. I hope you like it as much as I do!

Slice of 30 minute healthy chocolate cake on a plate with a fork from above

Need gluten-free? You can use gluten-free flour in this recipe, or try these one bowl gluten free brownies instead. / Looking for healthier party cakes? Try these healthy vanilla cupcakes with a super easy 2-ingredient frosting.

More healthier desserts

Also check out this list of 25 healthier cakes (lower sugar, but still taste great!).

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Closeup of a fork cutting into a piece of 30 minute healthy chocolate cake on a white plate and background
4.84 from 182 votes

30 Minute Healthy Chocolate Cake

It’s here. The chocolate cake of your dreams. A healthy chocolate cake stuffed with superfoods including sweet potato, cocoa and avocado. Made with only 8 main ingredients, it's dairy free, refined sugar free and saturated fat free. What are you waiting for?
Prep: 12 minutes
Cook: 18 minutes
Frosting: 5 minutes
Total: 30 minutes
Servings: 8 (to 10)

Ingredients 
 

For the cake

  • 1 cup sweet potato, mashed – see note below
  • 1 cup self-raising flour, NOT self-rising flour. To make self-raising flour, mix 1 cup all-purpose flour with 1.5 teaspoons baking powder.
  • ½ cup cocoa powder
  • ¼ teaspoon salt
  • ¼ teaspoon baking soda
  • 3 eggs, lightly whisked
  • 1 teaspoon vanilla
  • ½ cup olive oil, light
  • ½ cup maple syrup

For the chocolate mousse ganache

Instructions 

For the cake

  • Line the bottom of a 9 inch round cake pan with a circle of baking paper and spray the pan all over with a light coating of oil.
  • Preheat the oven to 355F/180C.
  • Pierce the sweet potato all over with a fork, then place on a plate or kitchen towel. Microwave on high for 6 to 8 minutes until the flesh is soft. Cut open lengthwise and scoop out the flesh. Mash it well in a medium bowl or jug (or pulse in a food processor for a few seconds). Let it cool a little.
  • Combine the flour, cocoa powder, salt & baking soda in a medium bowl.
  • Add the eggs, vanilla, oil and maple syrup to the sweet potato and mix well with a wooden spoon. Add to the dry ingredients and mix again until well combined.
  • Pour the batter into the prepared baking pan and bake for 18 minutes or until the top is just cooked and the centre is still a bit gooey.
  • Let cool for 10 minutes in the pan, then carefully turn out onto a wire rack to cool completely.

For the frosting

  • Pulse the avocado, cocoa and maple syrup in a food processor until silky and smooth. Once the cake is completely cool, spread the frosting thickly all over the top and sides.

Notes

Cooking time: Once you’ve practised making this cake a couple of times, it will only take 30 minutes from start to finish. You have to add a bit of time for cooling/frosting, of course!
When I first made this cake I cooked it for about 20 minutes and it was delicious but not at all gooey in the middle. I found that by reducing the cooking time a little (to 18 minutes in my oven) the centre stayed just a tiny bit gooey! Yum!
You want the top to look totally cooked, but when you insert a skewer into the middle of the cake it’s still a bit sticky.
If your cake isn’t gooey, don’t worry. When you top the cake with the ganache, it’ll kind of sink into the cake a bit and make it super moist. Am I making you hungry?
Sweet potato: I use a medium sized sweet potato and find that it nearly always makes about a cup of mashed sweet potato. If there’s any left over, simply freeze it for next time!
Make sure your sweet potato is nice and soft before scraping out the flesh. If it isn’t after 8 minutes in the microwave, just cook for another minute or two. Cooking time will vary according to the size of the sweet potato you use, of course!
How long it keeps: At least 3 to 4 days in the fridge if you cover it well or keep it in an airtight container.
Freezing instructions: This cake freezes really well. Just wrap well until you’re ready to defrost and eat.
It’s probably better to make and add the frosting just before you’re ready to eat the cake. Surprisingly though the frosting does freeze well too, so you can freeze the cake with the frosting already on if you like (I once froze half a frosted cake in the centre of a big container and it fared really well!)

Nutrition

Calories: 428kcal, Carbohydrates: 52g, Protein: 7g, Fat: 24g, Saturated Fat: 4g, Cholesterol: 61mg, Sodium: 149mg, Potassium: 592mg, Fiber: 7g, Sugar: 25g, Vitamin A: 2520IU, Vitamin C: 5.4mg, Calcium: 80mg, Iron: 2.4mg
Like this recipe? Rate and comment below!

About Helen Schofield

Don't expect to find anything fussy or complicated here. Just QUICK, EASY & (mostly!) HEALTHY recipes from the Mediterranean and beyond. ENJOY!

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195 Comments

  1. 5 stars
    Brilliant loved this Cake ,and most of all, my dad being a diabetic , thought it was great, and he was ok , no problems with it,
    Thank you Helen

    1. This is wonderful to hear, Hazel – thank you so much for letting me know! It makes me especially happy to hear that it worked out well for your dad 🙂

  2. 5 stars
    Just made this 30 minute healthier chocolate cake and it is so delicious. Even my 16 year old daughter who won’t eat sweet potato or avocado loved it. Just wanted to check about calories. When you say 428kcal what portion is that? A good sized slice? I assume not the whole cake? Thanks.

    1. Ahhh so happy to hear this, Emma! As a mum of a very fussy 7-year-old I can understand how please that might have made you feel when she ate it and enjoyed it! The calories are per portion (an eighth of the whole cake, but I think the cake can go a bit further than that). It’s not a super low calorie cake because of the oil and avocado, but at least they are healthier calories! I hope you enjoy the cake many times more!

  3. 5 stars
    Thirty-odd years ago now I made the chocolate cupcakes with carrot added that my daughter adored, for her birthday party. We found one bite taken cupcakes all over the place later! Clearly those little girls were wise to my ninja vegetable ways. Avos though would be much harder to detect…good thinking:).

    1. Oh that is hilarious, Toni – I’ve seen that even with regular cupcakes so maybe they were more into playing than eating! Haha, hope you give this cake a go. I think if you really think about it you can tell it’s avocado, but it tastes remarkably similar to Sarah Lee chocolate mousse frosting 🙂